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the region of the highest stress level and at the run-outs.
1. Frame with continuous Glare strap
– 1 specimen
– Loaded with negative bending moment, ultimate load
– Small artificial delaminations in frame-strap bondline
Matthijs Plokker / Derk Daverschot - ICAF 2009 20/05/2009 Page 32
© AIRBUS DEUTSCHLAND GMBH. All rights reserved. Confidential and proprietary document.
Structural Qualification - Test
2. Frame with run-out of Glare strap,
– 2 specimens
– Loaded with positive/negative bending moment, ultimate load
– Small artificial delaminations in frame-strap bondline
3. Frame with continuous Glare strap
– 2 specimens
– Loaded with positive/negative bending moment, limit load
– Large artificial delamination in frame-strap bondline (determined from
FE-analysis)
Matthijs Plokker / Derk Daverschot - ICAF 2009 20/05/2009 Page 33
© AIRBUS DEUTSCHLAND GMBH. All rights reserved. Confidential and proprietary document.
Structural Qualification - Test
Overview F&DT component tests (two)
1. Frame with continuous Glare strap
– 1 specimen
– Spectrum of 3 DSG and limit load (tension+compression)
– Initial flaws installed (1.27mm through cracks)
– Small artificial delaminations in frame-strap bondline
Strap
Frame inner
flange
Frame outer
flange
P4
P1 P7
Matthijs Plokker / Derk Daverschot - ICAF 2009 20/05/2009 Page 34
© AIRBUS DEUTSCHLAND GMBH. All rights reserved. Confidential and proprietary document.
Structural Qualification - Test
2. Frame with run-out of Glare strap
– 1 specimen
– Spectrum of 3 DSG and limit load (tension+compression)
– No initial flaws
– Small artificial delaminations in frame-strap bondline
– Specimen without artificial delamination for crack initiation and crack
propagation investigation
FML-straps
Frame inner flange
Frame outer flange
P4
P1 P7
Matthijs Plokker / Derk Daverschot - ICAF 2009 20/05/2009 Page 35
© AIRBUS DEUTSCHLAND GMBH. All rights reserved. Confidential and proprietary document.
Structural Qualification - Test
• Overview Coupon Tests
• Material and static coupon tests
– Tensile test thick Glare2A
– Compression test Glare2A
– Blunt notch test Glare2A
– Bearing test Glare2A
• Fatigue coupon tests
– Bonded+riveted specimens
– 20 specimens with/without cold worked holes
• Crack growth tests
– Coupon tests by external company in development phase
Matthijs Plokker / Derk Daverschot - ICAF 2009 20/05/2009 Page 36
© AIRBUS DEUTSCHLAND GMBH. All rights reserved. Confidential and proprietary document.
Summary
• FML strap establishes a safer, damage tolerant design of a highly
loaded frame.
• The new application has been introduced with an extensive
qualification program. All disciplines have to coorperate closely.
􀀗Structure engineering
􀀗Material
􀀗Quality Assurance
􀀗Process
• The first Production and Assembly has been succesfull.
Matthijs Plokker / Derk Daverschot - ICAF 2009 20/05/2009 Page 37
© AIRBUS DEUTSCHLAND GMBH. All rights reserved. Confidential and proprietary document. Thanks for your attention/
Bedankt voor uw aandacht
Matthijs Plokker / Derk Daverschot - ICAF 2009 20/05/2009 Page 38
© AIRBUS DEUTSCHLAND GMBH. All rights reserved. Confidential and proprietary document.
© AIRBUS DEUTSCHLAND GMBH. All rights reserved.
Confidential and proprietary document.
This document and all information contained herein is the sole
property of AIRBUS DEUTSCHLAND GMBH. No intellectual
property rights are granted by the delivery of this document or
the disclosure of its content. This document shall not be
reproduced or disclosed to a third party without the express
written consent of AIRBUS DEUTSCHLAND GMBH. This
document and its content shall not be used for any purpose
other than that for which it is supplied.
The statements made herein do not constitute an offer. They
are based on the mentioned assumptions and are expressed
in good faith. Where the supporting grounds for these
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will be pleased to explain the basis thereof.
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