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HTMTC Minutes 74th Meeting 13th November 2018 Instron, High Wycombe. FINAL 1

ESIS TC11 Company Registration No 02149907 Registered Charity 800892

www.htmtc.net [email protected]

HIGH TEMPERATURE MECHANICAL TESTING COMMITTEE Minutes of 74th Meeting

Tuesday 13th November 2018 at 2.00pm INSTRON, High Wycombe

Held in conjunction with a meeting of the Temperature Measurement Working Group held in the morning, and with an Instron Open Day Project on Wednesday 14th November 2018.

No. Topic Action

1 INTRODUCTION & WELCOME General. Dr Klingelhöffer (Chairman) welcomed all those who were present. The Agenda, given in Appendix 1, was agreed. Dr Peter Bailey welcomed the HTMTC to Instron.

2 ATTENDANCE & APOLOGIES FOR ABSENCE The business cards of the members present are given in Appendix 2. The following were present: Prof. M Bache (Swansea University), Dr Peter Bailey (Instron), Dr Peter Barnard ( Doosan), Dr Stephen Brookes (RR), Larry Candler (Consultant), Dr Costa Coleman (IncoTest), Mr Trevor Ford (CCPI Europe Ltd), Tony Fry ( NPL), Dr Jonathan P Jones (Swansea University, Dr Hellmuth Klingelhöffer (BAM), Mr Malcolm S Loveday (Secretary), Mr Dave McLennon (EDF), Dr. Svjetlana Stekovic (Linköping University, Sweden)[via Skype], Dr Fulk Müller (Technische Universität, Darmstadt), [via Skype], UK). Dr Ehsan Hosseini (EPMA, Zurich, via Skype), Jonathan Snell (Instron), Hans-Christian Walther (IfW -TuDarmstadt, Germany), Lee Waterhouse (Wood plc) & Phillip Williams (CCPI Europe Ltd) Apologies were received from Mr Andrew Mills (Siemens), Phil Jones (GE-ALSTOM) & Dr Nigel Wrigley (Zwick –Roell), No replies: Steve Collins ( UKAS), Prof Kamran Nikbin (Imperial College)Lee Mangham (Element Material Technology), Mr Owen O’Ogrady (Bodycote, UK), & Prof Brad Wynne (Sheffield University)

3 MINUTES OF PREVIOUS MEETING The Minutes of 73nd Meeting held on Thursday 19th April 2018, at NPL, Teddington, circulated previously by e-mail on 20/06/2018, were accepted as a correct record without amendment. They would now be circulated to the corresponding members and lodged on the HTMTC Website.

MSL LC

4 MATTERS ARISING There were no specific items raised that were not covered elsewhere on the Agenda.

5 CORRESPONDENCE

The Secretary reported that annual accounts and confirmation statement had been submitted on-line to Companies House in September and accepted. In addition the summary of Income & Expenditure had been logged on the Charity Commission website.

6 TREASURER'S REPORT /FINANCIAL MATTERS

Dates of Next Meetings : 1) The 75th meeting (AGM) will be held at Nottingham University on Thursday

11th April 2019 at 4.00pm following a meeting of the Temperature Measurement Working Group which will commence at 1.00 pm. The meeting will be held in conjunction with a DefTMF Project meeting

2) The 2019 AGM ( 76th Meeting) will be held in April 2019, (date & venue to be confirmed)


a) Ratification of auditor : James Phillip Evans, ACCA The appointment of Mr Phillip James as Independent Examiner was unanimously agreed. The treasurer was thanked for finding someone willing to undertake the task and an appropriate gift for services was agreed.

b) Approval of Accounts ( circulated on 10/10/2018 ). The 2017 Accounts/ books

had been scrutinised and signed off by Mr Evans and agreed by the Committee. The Treasurer presented an update of the current state of the HTMTC financial position. It was noted that the entry for Cura Digital Limited, was relating to an invoice for Annual HTMTC.com Web Hosting / Support.

c) Previous Records The Secretary reported that he had received the past accounts record , bank statements etc from Matt Brooks who had collected them from the previous auditor at Guildford.

d) Bank The Secretary had received a request from Barclays Bank for an update of our current Officers addresses and Charitable objectives. The form was circulated and completed at the meeting and will be returned to the Bank by the Secretary as requested.

e) Regonline - The Treasurer confirmed that he had now access to the Regonline account. The Chairman also agreed to access the account for registration of delegates for the 4th International Workshop on Thermo-Mechanical Fatigue.

JPJ MSL

7 MEMBERSHIP Dr Falk Müller (IfW Darmstadt) membership was ratified (replacing Dr Christian Kontermann) and was nominated by Dr Klingelhöffer, seconded by Mr Candler and elected nem con . In addition Nigel Ryder (Severn Thermal Solutions) was nominated by proposed by Dr Klingelhöffer, seconded by Tony Fry and elected nem con Jonathan Snell had sent notification that he will be leaving Instron in late November after 16 years to join RACE at Culham, (part of the UKAEA) but he hopes to continue being an HTMTC member. Dr Brookes forward the name of Dr. Olesia Khafizova of Shimadzu, based in Germany, for addition to the Corresponding Members list. The Secretary agreed to contact some of the Committee Members who had failed to attend or send apologies with a view to seeing if a colleague could represent their organisation.

8 HTMTC: Administration & Promotional Activities a) Web Site – Mr Candler reported that after some difficulty a new website host has

been secured and the old webpages transferred, The new web address is www.htmtc.net Mr Candler agreed to update the webpages shortly and he was thanked for dealing with this matter. A watching brief will be maintained to see if www.htmtc.com become available once again.

b) E-Mail It was noted that the HTMTC E-mail Address : [email protected] –would need to be changed and it was hoped that inquiries to that address could automatically be forwarded to the Secretary & Chairman’s existing e-mail inboxes. An appropriate e-mail address could be ‘[email protected]’ .

c) Memory sticks –number in stock : ~40 x 1 GByte held by the Secretary; Post meeting note: The Treasurer has now obtained a quotation From Flashbay for the

purchase of a new batch: for 250 sticks overprinted with the HTMTC Logo they will cost £1,146 ( 2 Gbyte) or £1167 ( 4 Gbyte) + £18 shipping.

d) Publicity flier – A5 folded version had been circulated after the last meeting and the amendments forwarded by Dr Brookes would be incorporated into an updated version. In addition , Dr Jones agreed to supply a new picture for an illustration. Please notify the Secretary of any further modifications together with improved pictures.

JPJ /MSL LC MSL All JPJ

9 GENERAL DATA PROTECTION REGULATION


GDPR legislation came into force in May 2018 and actions were in hand to ensure that the HTMTC complied with the new legislation. Mr Candler reported that the necessary procedure that the HTMTC will need to follow has now been uploaded to the HTMTC Website where it can be found by licking on the ‘Privacy Policy’ link at the foot of each page on the Website. A copy of the GDPR statement is given in Appendix 3 which has been compiled based on similar statements prepared for other Charities & Societies. Although members had been asked in an e-mail after the last meeting to respond manner if they wish to remain on the circulation list only about 50% had replied. Mr Candler agreed to supply an example of a tick box form that could be sent to all on our circulation list. The existing corresponding members would be asked to respond to indicate that they wished to remain of the circulation list. Our database of list of members would not be sold to third parties and since we primarily only disseminated information or invited members to participate in meetings it was felt that, provided we kept our database secure and could provide the audit trail of people’s agreement to be members, then we complied with the legislation. The Treasurer and Secretary were designated as the ‘Data protection Officers’.

LC JPJ / MSL

10 PAST HTMTC Symposia / Workshops a) Creep & Tensile Ductility, 2nd & 3rd June 2016, Loughborough- A Review paper was

still being prepared by Messrs Skelton, Holdsworth and Loveday. A draft of the article will be sent to Drs Barnard & Klingelhöffer for information.

MSL

11 FUTURE HTMTC Symposia / Workshops 11.1 ECCC 2020 – Edinburgh September – Following discussion at the meeting held at NPL in April, (see minutes of 73rd HTMTC meeting) further e-mail discussions have been held with the HTMTC Officers and representatives of the European Creep Collaborative Committee (ECCC) and their UK members of the UKHTPPF ( Power Plant Forum). It was confirmed that the ECCC 2020 would be held in Edinburgh on Mon – Wed, 13th -16th September 2020. Dr Barnard gave an informative presentation which gave an outline of the programme as follows: i) Sun 13th Sept 2020 - 18:00 Social Get Together , ii) Mon Sept 14

th to Wed Sept 16

th Welcome/Opening

Session, Technical Sessions :a) Service Issues, b) Testing & Measurement, c) Data Assessments and analysis, d) Materials - by Product & by Material Type, e) Modelling, f) Metallography & g) The New ECCC (Closing Session) Followed by Thurs- Sept 17

th Tours in the Edinburgh area

A draft version of the first publicity flier was tabled and agreed with minor amendments. It is proposed to hold the meeting at The Principal Hotel, George Street, Edinburgh in the City centre. The costing model for the event was discussed and the contract with the hotel has been reviewed. It was noted that the profits/ losses would be shared on a 50% -50% basis with the UKHTPPF, noting that the upper limit for underpinning conferences specified in the HTMTC Business plan was £10k. It was noted that the Registration Fees would be at the following rates: Attendees: £600, Speakers: £300, Poster presenters: £450 and Company Sponsorship: £1000 The Organising Committee would comprise: Chairmen: Peter Barnard –UKHTPPF Members: Scott Lockyer – (UKHTPPF), Malcolm Loveday & Jonathon Jones –( HTMTC) Jonathon Wells – IOM3 (HTMC). In addition, Dr Klingelhöffer Hellmuth will be on the Scientific Programme Committee Consideration will be given to recruiting additional paid assistance to help with registration. Following discussion on the above matters it was agreed that the HTMTC should actively participate in running the ECCC2020 Symposium , proposed by Tony Fry , seconded by Dr Klingelhöffer and carried unanimously. Dr Barnard was thanked for undertaking all the preparations. 11.2: 4th TMF-Workshop: Wed 13th – Fri 15th Nov 2019, BAM, Berlin Dr Klingelhöffer reported that all the preliminary administrative matters were now in place for the TMF Workshop to be held at BAM in November 2019. A draft 1st Circular and Call for Papers was circulated and agreed which would also be posted on the HTMTC Website and on the ESIS website www.structuralintegrity.eu website (see a attached document). Registration will open in August 2019. It is intended that the meeting would dovetail in with the final Workshop of the EU Funded Project ‘DevTMF’ concerned with Crack Growth

PD, HK, JPJ, MSL LC/HK HK/ SS


Measurement in Thermal Mechanical Fatigue being led by Dr. Svjetlana Stekovic. A potential programme/speakers would be considered together with costings and a registration flier would be prepared. It was noted that Elsevier had been contacted about a Special Issue of a Journal so that copies could be circulated to the delegates but it appears that Elsevier were now only producing electronic copies of special issues that could be down loaded as a pdf. It was noted that EU Commission require ‘Open Access’ journals which would need Industrial sponsorship to make them readily available to delegates. It is intended to use the Regonline process with payment fed into the HTMTC account. Details will be reviewed at the next meeting. It is intended to hold a HTMTC Committee Meeting in conjunction with the TMF workshop at a time to be arranged. 11.3: Joint IOM3 / HTMTC Wear & Erosion Meeting No further information concerning a possible joint meeting was available at present and because of the time commitments of HTMTC members in the above two events this topic will be put on hold until sometime in the future. Tony Fry mentioned that it might be of interest to NPL since they had a collaborative Project with Southampton University on lubricants.

12 WORKING PARTY REPORTS 12.1 Temperature Measurement WG for HT Testing: The Secretary reported that a meeting of the WG had been held in the morning attended by the majority of the people listed in Section 2. Topics discussed included a) An update on the Thermocouple Drift experiments with a presentation by Dave McLennon (EDF) and additional information supplied by Tony Fry (NPL) and a presentation by Christian Walther (IfW -TuDarmstadt) b) an update on progress on the code of Testing Practice, c) consideration of the Draft ISO 21913 : Verification of Temperature Measurement for Dynamic Fatigue Testing prepared by Dr Peter Bailey. Further information is provided in the Notes given in Appendix 4. It is planned to hold another meeting of the group on the morning of Thursday 11th April 2019 at Nottingham University starting at 1.00pm, prior to the next HTMTC Committee meeting. 12.2 Non Standard Testing WG Due to the pressure of other matters Mr Candler has still not found time to set up an initial “kick off” meeting with the few people who had expressed an interest and prepare an outline Scope for the WG. He would be happy to pass on the Convenorship to another member if someone would like to volunteer. 12.3 HT Friction Measurement WG It was reported that no progress had been made in convening the WG however details of the ‘Big Friction Rig’ developed at NPL in the early 2000’s had been collated. The Secretary had sent e-mails and tried phoning Prof Wynn at Sheffield with a view to kickstarting the activity. In addition contact had been established with a representatives from the AFRC in Strathclyde (Himanshu Lalvani) & from NPL ( Dr Mark Gee). Mr Candler also expressed interest in joining the group.

MSL

13 EMPRESS2: Temperature Measurement Project In Dr Clair Elliott absence it was reported that the EPRESS” project was progressing well. For further information see https://www.strath.ac.uk/research/advancedformingresearchcentre/whatwedo/collaborativeprojects/empress2project/ i) The latest developments in the field of traceable temperature measurement for process control and ii) End-users’ requirements and challenges For more information please contact: [email protected] Members were invited to keep in touch via the LinkedIn thermocouple group:


www.linkedin.com/groups/8588686 The next meeting of the thermocouple group will be held on Tuesday 4th December 2018 at NPL

14 STANDARDS ACTIVITIES 13.1 National Standards A number of members have attended national Standards meetings at BSI & DIN to progress a variety of standards activities and shadow the ISO activities. 13.2 International Standards Several members had attended some of the ISO TC164 Mechanical Testing Standards meetings held in Stockholm, Sweden on 16th - 21st September 2018. Dr’s Bailey, Brookes & Dr Klingelhöffer reported on some the matters discussed at the Fatigue and Fracture Toughness Sub-Committee (SC)/ Working Group (WG) meetings. Matters discussed included further consideration of the Working Draft (WD) ISO 21913 : Verification of Temperature Measurement for Dynamic Fatigue Testing prepared by Dr Peter Bailey and matters concerning the stability of extensometers used for HT Fatigue testing. This topic would probably be considered further when ISO 9513 Verification of Extensometers is reviewed in 5 years time. A written report should be available shortly. Messrs Loveday & Müller reported on TC164 SC1 WG2 Creep Testing noting that ISO 204 Standard had now been issued however it was noted that some further editorial aments would be necessary including an important amendment to Figure 1 , so the figure will be modified and a minor revision process launched early in the new year. A delegate’s report prepared by Mr Loveday is available in a separate document covering the following meetings :a) TC164 SC1 WG 2 Creep Testing, b)TC164 SC1 Uniaxial Testing, c)TC164 AHG 1 Uncertainty, d) TC 164 CAG -Chairman’s Advisory Group & e) TC 164 Plenary Meetings. Notice was also given about the next meetings a) at Ulm, Germany during the week Sunday 22nd September 2019 – Friday 27th September hosted by Zwick, and b) the meetings in 2020 would be near Philadelphia, Pennsylvania, USA from 5th October 2020 – 9th October 2020. [Note this will not clash with the ECCC2020 Creep meeting ]

HK

15 15.1 ESIS & FESI Feedback Members were reminded that members of ESIS Technical Committee’s were expected to be members of ESIS and UK residents could download membership application forms from the FESI website.

a) ESIS : For the ESIS Newsletter see www.structuralintegrity.eu , however at the time of the November HTMTC meeting the last Newsletter available was issued in January 2018 and the Council Minutes held at ECF 22 had not yet appeared.

It was reported that at ECF 22 which took place in Belgrade, Serbia in August 2018 a new ESIS President was elected : Prof Francesco Iacoviello from the Università di Cassino e del Lazio Meridionale, Italy who has succeeded Prof Leslie Banks-Sills from Tel Aviv University, Israel. The HTMTC activities and details are being updated by the Officers on a template circulated by the ESIS secretariat. b) For Membership of FESI see www.fesi.org.uk

The UK Forum for Engineering Structural Integrity (FESI) works towards assuring the reliability, safety and economic viability of engineered systems, structures and components from design to end-of-life, and to reduce undesirable environmental impact. Membership of ESIS can be arranged via FESI. For the bi-annual Bulletin see the FESI website.

16 ANY OTHER BUSINESS 16.1 Dates of Next Meetings:

a) The 75th meeting ( AGM) will be held at Nottingham University on Thursday 11th April 2019 at 4.00pm following a meeting of the Temperature Measurement Working Group which will commence at 1.30 pm. The meeting will be held in conjunction with a DefTMF Project meeting

b) The 76th HTMTC Committee Meeting will be held on Wednesday 13th November 2019 at 6.00-8.00pm in conjunction with the TMF Workshop at BAM, Berlin 13th – 15th November 2019.

16.2 Other Matters


It was reported that key members of the UK High Temperature Power Plant Forum (UK HTPPF) were about to retire and thus direct contact with the funds held by a commercial organisation on behalf of the PPF might be in jeopardy. Following discussion, it was agreed that the HTMTC would be willing to hold the funds as a designated fund in a separate account covered by the HTMTC Accounts. Consideration will also be given to a closer collaboration between the two organisation, with the UKHTPPF operating as autonomous Woking Group within the HTMTC. The groups agreed that it would be sensible to exchange the Article of Association / Constitutions and review constraints and operating parameters. It was noted that the HTMTC operate as TC11 of ESIS under a Memorandum of Understanding. The Officers would continue discussions and report back at the next meeting.

16.3 Close of Meeting A vote of thanks was expressed Dr Peter Bailey and to INSTRON for hosting the meeting. Thanks were also expressed to all present for attending and to Dr Klingelhöffer for Chairing the meeting.

17 LIST OF APPENDICIES 1. Agenda 2. Business cards, Committee Meeting 3. GDPR Privacy Policy 4. Notes of the Temperature Measurement Working Group


APPENDIX 1 HIGH TEMPERATURE MECHANICAL TESTING COMMITTEE www.htmtc.net

(74th Meeting) Tuesday 13th November 2018 at INSTRON* starting at 2.00 pm, following a Temperature Measurement WG meeting starting at 10.30 am

*Instron, Coronation Road, High Wycombe, HP12 3SY, UK In conjunction with an INSTRON open day showcasing the products for high

temperature LCF on Wednesday 14th Nov 2018 (see separate flier) AGENDA

ACTION 1 INTRODUCTION & WELCOME TO INSTRON PB ? HK 2 APOLOGIES FOR ABSENCE [ see Appendix A] MSL 3 MINUTES OF PREVIOUS MEETING

The Minutes of 73nd Meeting held on Thursday 19th April 2018, at NPL, Teddington [ circulated previously by e-mail on: 20/06/2018 ] To be approved

4 MATTERS ARISING ( Items not covered elsewhere on the Agenda)

5 CORRESPONDENCE Charity Commission, Companies House, etc MSL

6 TREASURER'S REPORT f) Ratification of auditor : James Phillip Evans, ACCA g) Approval of Accounts ( circulated on 10/10/2018 ) h) Regonline - Access confirmed ?

JPJ

7 MEMBERSHIP a) Resignations ?

b) Other Changes in Membership: a) New Members: Dr Ehsan Hosseini (EMPA), & Dr Falk Mueller (IfW Darmstadt, b) Others ?

c) Changes in contact details?

8 HTMTC: Administration & Promotional Activities e) Web Site –new host site ? new web address www.htmtc.net ? - feed back hit counter? f) HTMTC E-mail Address : [email protected] – this may need to be changed ?

g) Memory sticks –number in stock :43 x 1 GByte; purchase more? promotional materials d) Publicity flier – A5 folded version

LCP JPJ MSL

9 GENERAL DATA PROTECTION REGULATION ( GDPR) MSL et al 10 PAST HTMTC Symposia / Workshops

b) Creep & Tensile Ductility, June 2016, Loughborough- Review paper still being prepared MSL/SH/PS

11 FUTURE HTMTC Symposia / Workshops [ For other meeting of possible interest to HTMTC Members see separate list ]

a) ECCC 2020 – Edinburgh September – Regonline ? , Admin Support ? Principal Hotel etc

b) Wear & Erosion : Joint IOM3/HTMTC ? Autumn 2018 ? c) 4th TMF-Workshop: 13-15 Nov 2019, BAM, Berlin, D

PB/HK/MSL PB HK

12 WORKING PARTY REPORTS 16.1 Non Standard Testing WG: Scope & objectives

16.2 Temperature Measurement for HT Testing: feedback. CoP & Drift 16.3 HT Friction Measurement - Scope – Convenor Prof Brad Wynne

LC MSL/DMcL BW/MSL

13 STANDARDS: ISO TC164 Stockholm, Sweden， 16th – 21st September 2018 HK/PB/MSL 14 ESIS Feedback

c) Newsletter c) ESIS Council in see: www.structuralintegrity.eu d) Membership- FESI www.fesi.org.uk

15 ANY OTHER BUSINESS : a) Date of Next Meetings : i) 75th meeting ( AGM): date & venue : 11th April 2019, 4.00 – 7.00pm ? Nottingham University

c) Other items—Liaison with UKHTPPF ? ( Power Plant Forum) d) Vote of Thank

PB HK


APPENDIX 2. Business Cards of Attendees


APPENDIX 3 PrivacyPolicy This privacy policy sets out how HTMTC uses and protects any information that you give HTMTC when you use this website.

HTMTC is committed to ensuring that your privacy is protected. Should we ask you to provide certain information by which you can be identified when using this website, then you can be assured that it will only be used in accordance with this privacy statement.

HTMTC may change this policy from time to time by updating this page. You should check this page from time to time to ensure that you are happy with any changes. This policy is effective from 5th December 2016.

Whatwecollect We may collect the following information:

• name and job title • contact information including email address • demographic information such as postcode, preferences and interests

Whatwedowiththeinformationwegather

We require this information to understand your needs and provide you with a better service, and in particular for the following reasons:

• Internal record keeping. • We may use the information to improve our products and services. • We may periodically send promotional emails about new products, special offers or other

information which we think you may find interesting using the email address which you have provided.

• From time to time, we may also use your information to contact you for market research purposes. We may contact you by email, phone, fax or mail. We may use the information to customise the website according to your interests.

Security

We are committed to ensuring that your information is secure. In order to prevent unauthorised access or disclosure, we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect online.

Howweusecookies

A cookie is a small file which asks permission to be placed on your computer's hard drive. Once you agree, the file is added and the cookie helps analyse web traffic or lets you know when you visit a particular site. Cookies allow web applications to respond to you as an individual. The web application


can tailor its operations to your needs, likes and dislikes by gathering and remembering information about your preferences.

We use traffic log cookies to identify which pages are being used. This helps us analyse data about webpage traffic and improve our website in order to tailor it to customer needs. We only use this information for statistical analysis purposes and then the data is removed from the system.

Overall, cookies help us provide you with a better website by enabling us to monitor which pages you find useful and which you do not. A cookie in no way gives us access to your computer or any information about you, other than the data you choose to share with us.

You can choose to accept or decline cookies. Most web browsers automatically accept cookies, but you can usually modify your browser setting to decline cookies if you prefer. This may prevent you from taking full advantage of the website.

Linkstootherwebsites

Our website may contain links to other websites of interest. However, once you have used these links to leave our site, you should note that we do not have any control over that other website. Therefore, we cannot be responsible for the protection and privacy of any information which you provide whilst visiting such sites and such sites are not governed by this privacy statement. You should exercise caution and look at the privacy statement applicable to the website in question.

Controlling your personal information You may choose to restrict the collection or use of your personal information in the following ways:

• whenever you are asked to fill in a form on the website, look for the box that you can click to indicate that you do not want the information to be used by anybody for direct marketing purposes

• if you have previously agreed to us using your personal information for direct marketing purposes, you may change your mind at any time by writing to or emailing us at [email protected]

We will not sell, distribute or lease your personal information to third parties unless we have your permission or are required by law to do so. We may use your personal information to send you promotional information about third parties which we think you may find interesting if you tell us that you wish this to happen.

You may request details of personal information which we hold about you under the Data Protection Act 1998. A small fee will be payable. If you would like a copy of the information held on you please write to [email protected].

If you believe that any information we are holding on you is incorrect or incomplete, please write to or email us as soon as possible at the above address. We will promptly correct any information found to be incorrect.


APPENDIX 4:

HTMTC Working Group on Temperature Mesurement for HT Mechanical Testing

Notes of the 19th Meeting of the HTMTC Mechanical Testing

Temperature Measurement Working Group Tuesday 13th November 2018 at 10.30am at INSTRON, Coronation Road, High Wycombe, HP12 3SY, UK Followed by an HTMTC Committee Meeting at 2.00 pm .

Provisional Agenda 1) Introductions / Business Cards 2) Welcome to INSTRON 3) Confirmation of Agenda – additional items ? 4) Notes of Previous Meeting :

See Extract from previous HTMTC Minutes given in Appendix 1 to the Agenda for the Main HTMTC Meeting, November 2018.

5) Matters Arising / Actions not covered elsewhere on Agenda 6) Drift of T/Cs Update on HTMTC sponsored measurements of Drift of Type N T/Cs i) Measurements at EDF ( D McLennon) & ii) Measurements at NPL iii) AMEC ( SERCO) drift results ?

iv) IfW -TuDarmstadt: T/C drift data : Dr-Ing Christian Kontermann ? 7) Dynamic Response of T/C’s Further results ? & Analysis [ All?]

i) INCO Measurements ii) ii) Swansea TMF measurement. Analysis (Jonathan Jones) iii) An update on an ISO Standard for Dynamic Temperature Measuement – Dr P Bailey

8) Update on EMPRESS 2 project ? see http://projects.npl.co.uk/hitems/ [NPL- C Elliot ] In addition members were invited to keep in touch via the LinkedIn thermocouple group: www.linkedin.com/groups/8588686 The next meeting of the thermocouple group will be held on Tuesday 4th December 2018 at NPL 9) Additional presentations:

10) Update of the Bibliography. [ MSL] 11) Consideration of a Code of Practice for Temperature Measurement in Mechanical Testing. :

12. Any Other Business: 12.1 Other Matters 12.2 Date & Venue of Next Meeting 12.3 Vote of Thanks

ITEMS COVERED

1. The Convenor, Mr Loveday, welcomed attendees and thanked Dr Peter Bailey and Instron for hosting the meeting. Approximately 16 people were present ( see attendance list for the 74th HTMTC Meeting & sign-up sheet ).

2. The Agenda shown above was agreed. 3. The Notes of the previous meeting held at NPL on Thursday 19th April 2018 had been

attached to the Minutes of the 73rd HTMTC and circulated previously. 4. The were no Matters Arising that were not covered elsewhere on the Agenda. 5. Thermocouple Drift Measurements

The major matter discussed was the progress on the T/C drift measurements being undertaken at EDF & NPL, together with a presentation by Dr-Ing Christian Kontermann concerning thermocouple drift data measured at IfW -TuDarmstadt.

5.1 EDF Measurements Dave McLennon reported that there had been an interruption in the data recording due to a fault in the Aiglent controller/ logger but the problem had now been traced and rectified with help from CCPI, however an off-set was now apparent but it is noted that the drift rate is similar to the interruption, see Figure A4.1. It is noted that the correction parameter


is shown in the diagram which indicates the drift is in a positive manner, i.e. the emf is increasing with exposure time, which has now exceeded 43,000 hours at 650ºC

Figure A4.1 EDF Drift measurements at 650 ºC

Figure A4.2. EDF Drift measurements at 650 ºC of the Type R T/C. It was noted that there was some modest downward drift of the Type R T/C as shown in Figure A4.2

The second series of measurements had been cycled between 50ºC to 650ºC and the accumulated 6 hour dwell time at 650ºC has now reached ~10,700 hours giving rise to drift in the K type T/C’s of 2.5ºC and about 0.7 ºC in one of the batch of N type T/C’s, Figure A4.3. Again, the lines represent the average of the readings of each batch of thermocouples.


Figure A4.3 EDF Cyclic drift measurements.

5.2 NPL Measurements Tony Fry presented an update of the drift measurements being undertaken at NPL at 750 ºC. It was reported that due to a lab shut down there was an interruption in the data, however the tests had been restarted and now progressing. The raw data is shown in Figure A4.4 and the temperature difference from Type R Reference T/C is shown in Figure A4.4. The raw data files have been closely examined and it has been confirmed that the drift is definitely in a positive manner. The soaking time has now exceeded 27,000 hours.

Figure A4.4. Direct measurements at NPL at 750 ºC

Figure A4.5 NPL Drift measurements : Temperature difference from Type R Reference T/C.


Consideration will be given to recalibrating the Type R reference T/C to determine the magnitude of it’s drift. In addition it was agreed to present a single line showing the average of a particular batch of T/C’s ( excluding any outliers, e.g. T/C 5 in the NPL data set). In addition an error bar should be added to the latter curves indicating the scatter or the uncertainty. It was also requested that when the drift experiments are finally shut down the batch of T/C’s with T/C 5 should be carefully removed and photographed to see if T/C 5 is in a slightly different position compared to the others in that batch. The T/C’s should not be removed prior to completion of the experiments since it is unlikely that they could be replaced in exactly the same position in the furnace.

5.3 IfW -TuDarmstadt Measurements Dr-Ing ChristianWalther gave an interesting presentation concerning thermocouple drift data measured at IfW -TuDarmstadt.

New experimental results showing the drift of a single S, N & K type T/C’s that had been soaked for ~8,000 h at 800ºC. The emf of the S, N & K T/C’s were compared with the output from a type S refence T/Cs, which was removed after reverifying the other three T/C’s. The 3 T/C’s were immersed in a furnace with a 350 mm depth of immersionfor soaking however, they were removed for periodic verification for recalibrated in a small furnace with only 15 mm depth of immersion. Every TC has been removed for recalibration in the compact oven monthly, additional measurements ("in situ") have been made with the TC in their place in the 350 mm-oven. The preliminary results are shown in Figures A4.6 &7. It can be seen that the Type K & N show an upward drift whilst the Type S decreases in output with soaking time. The type N T/C indicated a +4 ºC drift but the Type N only showed a drift of +2 ºC after about 4,000 h and then started to decrease with a 350 mm immersion but the S type T/C showed a drift of -3 ºC, Figure A4.6.

Figure A4.6. Drift of K, N & S T/c’s with a 350mm immersion. All three T/C’s were removed and compared with the reference type S T/C in the calibration furnace with a


15mm dept of immersion, Figure 4.7. It can be seen that a much greater drift effect was recorded, clearly demonstrating the importance of having a similar depth of immersion for calibration purposes.

Figure 4.7. Preliminary drift results with 15mm immersion.

5.4 Drift – General Discussion All three Laboratory confirm that the Type N & K T/C drift in a positive manner, and that the drift of the N type was greater than the K type. It was thought that earlier data for type K had indicated that it drifted in a negative manner but it was reported that Type N wire had been developed and manufactured by Hoskins in the USA, but they went into liquidation in the 1980’s and thus the composition of Type N wire today may be different so the drift characteristics might be different. It was agreed that the EDF data would be plotted as drift rather than as the correction parameter so that it would be easier to compare all the results.

Mr McLennon & Mr Fry & Dr Walther, together with EDF, NPL & IfW were thanked for their important contributions for undertaking these measurements.

6. Dynamic Temperature Measurements It was reported that again no progress had been made regarding the proposal of carrying out some tests to determine the dynamic response of T/C’s immersed in a fluidized bed whilst attached to a block of metal of similar mass as a test piece. However, Mr Coleman had brought a block ( approximately 150 x 30 x 30mm) of a nickel based superalloy to the meeting which was handed to Phill Williams ( CCPI) who would be willing to undertake a few experiments. The block was approximately 5 times the size of a normal testpiece so an additional smaller sample would be obtained, which would be passed to a CCPI representative the following week in Hereford. It is intended that the results should be compared to the previous measurements when the sheathed T/C’s were inserted into the fluidized bed. The Convenor agreed to supply Mr Williams with the results of the previous measurements and a brief note outlining the procedure. In addition it was noted that Dr Bailey had previously agreed to draft a short protocol outlining a short series of tests designed to ascertain the dynamic response of the temperature sensors in a regime similar to TMF testing. 7. Update on EMPRESS 2 project Unfortunately Dr Elliot was unable to attend the meeting and sent her apologies. However members were invited to look at http://projects.npl.co.uk/hitems/ for further information. In addition members were invited to keep in touch via the LinkedIn thermocouple group: www.linkedin.com/groups/8588686 The next meeting of the thermocouple group will be held on Tuesday 4th December 2018 at NPL


8. ISO WD 21913 Review

Dr Peter Bailey spoke about the Working Draft (WD) ISO 21913 : Verification of Temperature Measurement for Dynamic Fatigue Testing, which had been further revised at the ISO TC164 Working Group in Sweden in September. The view that it might be better to initially issue it as an ISO Technical Report rather than a ISO Standard so that some of the procedures outlined in the document to be put into practice at a number of Laboratories who could provide feed back before at mandatory Standard was published. The UK will formally be able to express a view when the Document is circulated at the ballot stage.

9. Other Matters There were no other additional presentations and no notifications had been received about addition publication to be added to the Bibliography of publication relevant to temperature measurement for mechanical testing.

The Secretary also reported that he had not received any feedback or amendments to the CoP from Members of the Main Committee. The Secretary also reported that he had been in contact Peter Skelton, the Editor of MAHT and had agreed to forward a copy of the CoP after its next revision to see if it would be suitable for publication, in a similar manner to previous HTMTC CoP’s.

10. Next Meeting & Vote of Thanks It is planned to hold the next meeting of the Temperature Measurement Working Group gathering at 1.00pm Thursday 11th April 2019 prior to the 75th meeting (AGM) being held at Nottingham University at 4.00pm. A vote of thanks was expressed Dr Peter Bailey and to INSTRON for hosting the meeting. Thanks were also expressed to all present for attending and contributing to the discussion.

minutes of 74th meeting (instron, high wycombe november …...htmtc minutes 74th meeting 13th...

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