prof. k. berner. up-to-date progress in panel applications institut for sandwichtechnology prof....
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![Page 1: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/1.jpg)
Prof. K. Berner
![Page 2: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/2.jpg)
Prof. K. Berner
Up-to-date progress in panel applications
Institut for SandwichtechnologyProf. Dr.-Ing. Klaus Berner
Edinburgh, 23th – 24th of October 2008
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Prof. K. Berner
One of the first German
Approval for Sandwich-
Panels1978
![Page 4: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/4.jpg)
Prof. K. Berner
German Approval for Sandwich-Panels - 1978
![Page 5: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/5.jpg)
Prof. K. Berner
German Approval for Sandwich-Panels - 1978
![Page 6: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/6.jpg)
Prof. K. Berner
German Approval for Sandwich-
Panels1978
![Page 7: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/7.jpg)
Prof. K. Berner
Advancement in the Field of Sandwich Panels
I. Advancement of the Production
II. Optimization of Material and Cross Section
III. Enlargement of the spectrum of use
![Page 8: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/8.jpg)
Prof. K. Berner
Advancement in the Field of Sandwich Panels
I. Advancement of the Production
II. Optimization of Material and Cross Section
III. Enlargement of the spectrum of use
![Page 9: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/9.jpg)
Prof. K. Berner
I. Advancement of the Production
Continous production line
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Prof. K. Berner
I. Advancement of the Production
Damages
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Prof. K. Berner
I. Advancement of the Production
Damages
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Prof. K. Berner
I. Advancement of the Production
Quality Control with samples
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Prof. K. Berner
I. Advancement of the Production
Research Project:
qSpai
Development of non destructive testing methods for sandwich panels
Eureka project: Budget: 34.000,- €Status: completed
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Prof. K. Berner
I. Advancement of the Production
Research Project: qSpai
• Three principle ways to investigate sandwich panels
– Rays– Mechanics– Thermal methods
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Prof. K. Berner
I. Advancement of the Production
Research Project: qSpaiX-Ray
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Prof. K. Berner
I. Advancement of the Production
Research Project: qSpai
Discontiuities in the panels lead to thermal differences
•Passive Thermography•Lock-in Thermography•Pulse Thermography
Thermal methods
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Prof. K. Berner
I. Advancement of the Production
Research Project: qSpaiLock-in Thermography with results
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Prof. K. Berner
I. Advancement of the Production
Research Project: qSpaiLock-in Thermography
• Advantages– it works– complete surface areas can be monitored– the technique is known
• Disadvantage– reflecting materials often don’t absorb enough energy to
show a visible effect. Therefore a matting colour has to be used.
– The pictures are sometimes not very clear. Therefore somebody has to watch the screen.
– It is difficult to illuminate and to observe non flat geometries
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Prof. K. Berner
I. Advancement of the Production
Research Project: qSpaiMechanical Methods
• Macroscopic deformation– Oscillator coupled to the panel– Magnetic forces
• Microscopic deformation– Ultrasound methods– Microflown
• Measuring– Photometry– Vibrometry– Speckle Interferometry
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Prof. K. Berner
I. Advancement of the Production
Research Project: qSpaiMagnetic forces
CoreForceResetFaceForceResetMagnet FFF
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Prof. K. Berner
I. Advancement of the Production
Research Project: qSpaiImplementation of …..
0,5 m m
Führungsstangeguide rod
Andruckfederpressure spring
M agnet
Kraftaufnehm erforce sensor
M axim ale “virtuelle” D efektgrößem axim um virtual s ize of the defect
design
realisingand
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Prof. K. Berner
I. Advancement of the Production
Research Project: qSpaiImplementation of …..
![Page 23: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/23.jpg)
Prof. K. Berner
Advancement in the Field of Sandwich Panels
I. Advancement of the Production
II. Optimization of Material and Cross Section
III. Enlargement of the spectrum of use
![Page 24: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/24.jpg)
Prof. K. Berner
II. Optimization of Material and Cross Section
•PUR (PIR)-foam
•EPS (XPS)
•Mineral wool
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Prof. K. Berner
II. Optimization of Material and Cross Section
Research Project: SwichCore
SwichCore
Development of a new fire resistant core material
FH3 - project: Budget:163.000,- €
Status: completed
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Prof. K. Berner
II. Optimization of Material and Cross Section
Research Project: SwichCore
Phenolic Foam
Hybrid Foam
Sodium Silicate Composite “SiAC”
Developed core materials
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Prof. K. Berner
II. Optimization of Material and Cross Section
Research Project: SwichCoreResults of tensile-tests / Phenol
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Prof. K. Berner
II. Optimization of Material and Cross Section
Research Project: SwichCoreFull scale tests / Phenol
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Prof. K. Berner
II. Optimization of Material and Cross Section
Research Project: SwichCoreReaction to fire & Fire resistance
Single Burning Item SBI-Test nach EN 13823
Fire Resistance Test according to DIN EN 1364-1
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Prof. K. Berner
II. Optimization of Material and Cross Section
Research Project: SandTweak
SandTweak
Optimisation of geometry and core material
of sandwich panels with metallic faces
FH3 - project: Budget:150.000,- €
Status: running
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Prof. K. Berner
II. Optimization of Material and Cross Section
Research Project: SandTweak
Cross Sections (out of German Approvals)
roof panel
1978 – Laminoirs de Strasbourg 2008 – ArcelorMittal Construction
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Prof. K. Berner
II. Optimization of Material and Cross Section
Research Project: SandTweak
Cross Sections (out of German Approvals)
wall panel
1978 – Laminoirs de Strasbourg 2008 – ArcelorMittal Construction
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Prof. K. Berner
Core material (out of German Approvals)
II. Optimization of Material and Cross Section
Research Project: SandTweak
1978 – Laminoirs de Strasbourg 2008 – ArcelorMittal Construction
•Density 40 kg/m3
•Tensile strength with faces 0,09 N/mm2
•Shear strength 0,11 N/mm2
•Shear Modulus 2,5 N/mm2
•E-Modulus Core 2,4 N/mm2
• Density
39 kg/m3
• Tensile strength with faces
0,07 N/mm2
• Shear strength
0,14 N/mm2
• Shear Modulus
2,8 N/mm2
• E-Modulus Core
2,3 N/mm2
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Prof. K. Berner
W vs. GC
II. Optimization of Material and Cross Section
Research Project: SandTweak
Wrinkling stress W (Plantema) Internal forces (bending moment at internal support of a two span
panel with flat faces) out of temperature
3W C C FE G E S
S2
C C
3 B 1M
3 B2 1G A
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Prof. K. Berner
Aim of optimization
II. Optimization of Material and Cross Section
Research Project: SandTweak
Algorithm
of
Optimization
material costs production costs
load capacity
building physics
fire performance
production technology
ecological compatibility
![Page 36: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/36.jpg)
Prof. K. Berner
Optimization of core material
II. Optimization of Material and Cross Section
Research Project: SandTweak
1. Analyse of old test results (last four years)
2. Selection of “experience areas” for all mechanical values
3. Expanding the “experience areas”
4. Determination of new combinations for mechanical properties → new core material
![Page 37: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/37.jpg)
Prof. K. Berner
Optimization of core material
II. Optimization of Material and Cross Section
Research Project: SandTweak
Determination of new optimal variations of mechanical properties of core materials
Searching of:
Mechanical properties from certain sets:
Gc Gc1; Gc2
Ecc Ecc1; Ecc2
Ect Ect1; Ect2
fcc fcc1; fcc2
fcv fcv1; fcv2
Aiming at
Load factor:
Criterions of failure
w → 100 %
fCv → 100 %
fCc → 100 %
w → 100 %
OPTIMUM
concerning design
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Prof. K. Berner
Optimization of core material
II. Optimization of Material and Cross Section
Research Project: SandTweak
Identification of the optimal core material for a double-span beam
• Material values according to German Approval:
allowable span L
GC = 3.6 N/mm2, EC = 3.7 N/mm2, fCv = 0,110 N/mm2 L = 5.61 m
• Material values optimized:
allowable span L
GC = 5.5 N/mm2, EC = 5.0 N/mm2, fCv = 0,085 N/mm2 L = 7.37 m
31% longer spanswithout any further costs
L L
wD = +0,50 kN/m2
wS = -0,25 kN/m2 FG III
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Prof. K. Berner
Advancement in the Field of Sandwich Panels
I. Advancement of the Production
II. Optimization of Material and Cross Section
III. Enlargement of the spectrum of use
![Page 40: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/40.jpg)
Prof. K. Berner
III. Enlargement of the spectrum of use
Openings requires additional girders
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Prof. K. Berner
III. Enlargement of the spectrum of use
Frame Construction
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Prof. K. Berner
III. Enlargement of the spectrum of use
Full scale tests
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandFlat
SandFlat
Research and Development of flat roof sandwich elements
FH3 - project: Budget: 150.000,- €Status: completed
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandFlatDeriving from problems in the industry a research project was established
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandFlatThree important technical packages
• Seals of flat roof elements
• Fixings for flat roof elements
• Long-term loading of flat roof elements
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandFlatCreep-tests
Loads due to snow
Loads due to high temperature
Loads due to self-weight
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandFlatIdeas for new seals
Seals for longitudinal joint Seals for transverse joint
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandFlatWater column test (developed by iS-mainz)
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandFlatTest of air and water tightness according
to DIN EN 12865 & DIN EN 12114
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandFlatPilot-project
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandSet
SandSet
Research of sandwich elements used as load-bearing building components
FHprofUnd - project: Budget: 253.000,- €Status: running
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandSetLoads and Actions
Vertical Loads
Stiffening
Beam Action
![Page 53: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/53.jpg)
Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandSetUse for …
Cold stores
Exhibition Building
Aquahouse
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Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandSetUse for …
![Page 55: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/55.jpg)
Prof. K. Berner
III. Enlargement of the spectrum of use
Research Project: SandSetUse for …
![Page 56: Prof. K. Berner. Up-to-date progress in panel applications Institut for Sandwichtechnology Prof. Dr.-Ing. Klaus Berner Edinburgh, 23 th – 24 th of October](https://reader035.vdocuments.us/reader035/viewer/2022062318/551a445d550346a4248b5c35/html5/thumbnails/56.jpg)
Prof. K. Berner
Institut for SandwichtechnologyProf. Dr.-Ing. Klaus Berner
Edinburgh, 23th – 24th of October 2008
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