non-destructive testing (ndt) – a paradigm shift in ... · pile integrity -pulse echo -ultrasonic...

A Report Of One-Day Workshop On

NON-DESTRUCTIVE TESTING (NDT)

10.10.2017

A Report Of One Day Workshop On

NON-DESTRUCTIVE TESTING (NDT)

A Paradigm Shift in Retrofitting Industry

2017

BansilalRamnath Agarwal Charitable Trust’s

Vishwakarma Institute of Information Technology,

Kondhwa (B.K), Pune 411048

.-A Paradigm Shift In Retrofitting Industry

Indian Concrete Institute

Students’ Chapter

Department of Civil Engineering, VIIT, Pune

NON-DESTRUCTIVE TESTING (NDT) – A Paradigm Shift In Retrofitting

2 ICI STUDENTS’ CHAPTER, VIIT, PUNE

Organized By

Indian Concrete Institute (ICI)

Students’ Chapter, VIIT, Pune

Tuesday, 10th October, 2017

From 9.00 AM to 8.00 PM

At

Seminar Hall, E-building,

Vishwakarma Institute of Information Technology, Kondhwa

Pune- 411048

Mrs.A.G.Tanawade,

ICI Co-ordinator,VIIT

INTRODUCTION

The Indian Concrete Institute (ICI) Students’ chapter, Civil Department,

Vishwakarma Institute of Information Technology (VIIT), Pune successfully

organized and held a One-Day workshop on NON-DESTRUCTIVE TESTING

(NDT) on Tuesday 10th

of October,2017 , starting at 9.00 AM to 7.00 PM with

participation of total 80 students and 10 teaching staff.

The workshop conducted in Seminar hall , E-building, Vishwakarma Institute of

Information Technology (VIIT), kondhwa, pune on 10/10/17, was a part of the efforts

to improve student’s knowledge and employability skills in construction industry.

The workshop was taken by Er. Ravi Ranade, Managing Director of Construction

Diagnostic Centre.(CDC) Pvt .Ltd, a NDT expertise for structural and quality audit,

also structural restoration consultants. Their office located at Erandawane, Pune.He is

an expert in Non-destructive testing, backed up by excellently qualified labs and

employees. He may strike as a man of Time, due to his strict punctuality.



BACKGROUND

This is a post-event wrap up report on the One-Day workshop on NON-

DESTRUCTIVE TESTING (NDT) on Tuesday 10th of October, 2017, organized by

Indian Concrete Institute (ICI), Students’ Chapter, VIIT, Pune. The report consists of

executive summary, specific details and other technical details which will give an

insight of the workshop and live demo of equipment on site.

WORKHOP AGENDA

The agenda of this workshop was to develop and advance the employability skills of

enthusiastic students and expose them to the retrofitting industry, trends and practices.

WORKSHOP OBJECTIVE

1. To understand how to operate the NDT equipments, their working on site,

2. To spread awareness and expose students to retrofitting industry,

3. To develop and embed new skills in students

4. To be prepared to apply their knowledge of NDT in the industry

METHODOLOGY

1) Presentation : Theory session will inform students and spark their interests,

2) Experience sharing : This will amaze the students by actual site scenarios,

3) Brainstorming : Clear the doubts and improve overall understanding,

4) Discussions : Deepen the understanding and explain the key concepts,

5) Site Demonstrations: Better understanding of procedure and handling of

equipments.

PARTICIPANTS: A total of 80 students and 10 staff members attended this.

WELCOME ADDRESS

The morning of workshop day was itself warm and exciting. The host, Ms.Sonali

Sonker, a fellow student of TE-A, Civil welcome students and Speaker

Er.RaviRanade. Felicitation to expert done by H.O.D of Civil department, S.G.Joshi.

PROCEDDING DETAILS

SESSION 1 :NDT : Introduction and why NDT.

Non-Destructive Testing (NDT) is the process of doing inspections, testing, or

evaluating materials, components or assemblies for defects without destroying the

material or component or the use of non-invasive techniques to determine the integrity



of a material, component or structure”. In other words, “Inspect or measure without

doing harm.”

NDT plays a vital role in assuring the safe operation of equipment and systems.

Industries that utilize NDT:

Airline and Aerospace

Automotive and Railroad

Construction

Hydroelectric, Fossil, Nuclear Power

Textile and Manufacturing

Chemical and Petrochemical

Logistics and Supply

Medical and Pharmaceutical.

Uses of NDT: Flaw Detection and Evaluation - the size, shape, or orientation of a

flaw (such as a crack or porosity)

Leak Detection

Location Determination

Dimensional Measurements

Structure and Microstructure

Characterization

Estimation of Mechanical and Physical

Properties

Stress (Strain) and Dynamic Response

Measurements

Material Sorting and Chemical

Composition Determination

the thickness of a material or coating

the hardness of a material

a material’s electrical conductivity

The size, shape, or orientation of a flaw (such as a crack or porosity),

The thickness of a material or coating

The hardness of a material

The material composition (example, the carbon content in steel)

material’s electrical conductivity

Test methods may be used to determine:

Lime is more durable than cement. For ex. Old heritage monuments/wadasmade of

lime, are still standing whereas buildings of cement cannot even reach 80 years in

practice due to deterioration etc. There are no criterias for durability, no regulations.

Sadly India has not made a IS code of their own till now and to be honest no-one

Speaker Er. Ravi Ranade



follows the IS Code on site practice and this reflects in the death rate during disasters.

It is expected that by 2025, we will have cement free construction- Geo Polymer

Concrete.

Cube Strength Depends on:

1) Age

2) Size of mould-cube/cylinder

3) Shape of mould

4) Mould material and texture

5) Compaction

6) Curing technique

7) Moisture conditions at time of

testing

8) Type of CTM

Er.Ravi Ranade during lecture.



SESSION 2: Methods of NDT

Based on principle, they are classified as follows:

Group - A - Surface Hardness Methods

Rebound Hammer Test

Penetration Test – Windsor Probe

Group - B - Dynamic or Vibration

Methods

- Resonant Frequency – Only Lab

method

- Ultrasonic Pulse Velocity

- Acoustic Emission

- Impact Echo

- Transient Dynamic

- Sonic / Pulse Echo , Impulse Response

- Vibration Measurement

Group - C - Magnetic Methods

- Reinforcement Detectors & Cover

meters

Group – D – Electrical Methods

- Dielectric Measurement ( Moisture

Content )

- Electrical Resistivity

Group - E - Electro- Magnetic Methods

- Radar (Ground Penetrating Radar )

- Group – F – Radioactive / Infrared /

Thermal Methods

- X – Radiography

Group – G - Penetrability Methods

- Air / Gas / water permeability Test

- Gamma Radiography

Group – H - Partially Destructive Tests

- Penetration Resistance Test (

Windsor Probe )

- Pull - out test

- Pull - off test

- Break – off test

- Core cutting

Group - I - Other properties of fresh /

hardened concrete

- Chemical tests

- Cement Content &Agg / Cement

ratio

- Sulphate determination test

- Chloride determination test

- Alkalinity test

- Carbonation test

- Crack measurement & monitoring

- Abrasion resistance test

- Fresh concrete tests for W/C ratio

and

- compressive strength



Based on parameter, the methods can be classified as follows:

FOR CONCRETE

- Compressive strength Rebound Hammer

- Windsor probe,

- Ultrasonic Pulse Velocity,

- Core

- Capo,

- Pull Out

- Combined methods

Flexural Strength- Break – off

Direct tensile strength- Pull off

Concrete Quality

- Ultrasonic Pulse Velocity,

- Homogeneity Pulse echo,

- Honeycombing, voids, Endoscopy,

- Gamma Ray Radiography

- GPR

Damages

- Fire / blast / Rebound Hammer

- Earthquake Ultrasonic Pulse Velocity

- Core Test

- Acoustic Emission

Cracks,Delamination

- Ultrasonic Pulse Velocity-water tanks /

Acoustic Crack Detector

- pavements / bridges Infrared

Thermography

- Dye Penetration Test

- X – ray Radiography

- Gamma Ray Radiography

- Crack scope

Pile Integrity

- Pulse Echo

- Ultrasonic Cross Hole

- Logging

- Thermal Integrity Profiling

FOR STEEL

Location, cover, size

- Rebar locator , Bar size

Corrosion Half

- Cell Potential

- Resistivity

- Polarisation

- Carbonation

- Chloride Content

Condition -Endoscope / Bore scope

Integrity & Performance Tapping

- Pulse – echo

- Acoustic emission

- GPR

- Load Test

Utility Mapping - GPR



FELICITAION OF STUDENTS AND STAFF ATTENDEES-By Ravi Ranade

.

SESSION 3: Details Of Methods Of NDT

Number of Tests necessary for various test methods: Test method Nos. of Individual readings

Recommended at a location

Standard cores = 3 Rebound hammer = 12

Ultrasonic Pulse Velocity = 2 Windsor Probe = 3

Pull – out = 4 Pull – off = 6

Break – off = 5

Medical Science V/s Concrete Science

Orthopedic Doctor - Structural Engineer

Pathologist - NDT Consultant

Surgeon - Structural / Rehabilitation

Consultant

Medicines - Construction Chemicals

Stethoscope - Rebound hammer

Sonography - Ultrasonic Pulse Velocity

Biopsy - Core cutting

Plaster for fracture - Jacketing to member

Then various case studies were presented which represented the vital role of NDT and its merits and

how it helped in actual site situations.

Felicitation of Prof.H.B.Dhonde by Joshi Sir

Er.Ravi Ranade felicitating a student.

Er.Ravi Ranade felicitating a student.



SITE DEMONSTRATION: AT SUKH-SAGAR CONSTRCUTION SITE.

ICI, Hon.Secretary- Er.Prasad Sevekari also joined us at site demonstration. The live demo of

almost all the equipments such as Rebound hammer, UPV method, moisture meter etc and their

handling was successfully carried on site.

VOTE OF THANKS given by Mrs.A.G.Tanawade and Prof.H.B.Dhonde, on behalf Civil

Department,VIIT, Pune.

Site photos during workshop :--

Site Demo Of Radar Scanning of Slab

Site Demo Of Rebar Locator

ICI Chairman Er.UjwalKunte at Site

Group Photo at Site with Er.Ranade and Er.Prasad

Sevekari

Performing Ultra Sonic Pulse Velocity test

Group Photo at VIIT with Speaker Ravi Ranade

non-destructive testing (ndt) – a paradigm shift in ... · pile integrity -pulse echo -ultrasonic...

Documents