ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In recent decades the use of structural adhesive joints in the aerospace industry hasincreased considerably thanks to their high strength-to-weight ratio, low stress concentration andcapacity to join different adherends. There is increasing interest in damage due to low-velocityimpacts produced in adhesively bonded components and structures by vibrating loads. This type ofloading is known as impact fatigue. The main aim of this paper is to investigate damage evolutionin adhesive joints subjected to impact-fatigue and to compare this with damage evolution instandard fatigue (i.e. non-impacting, constant amplitude, sinusoidal fatigue).In this work, adhesively bonded lap joints were subjected to multiple tensile impacts tensile andit was seen that this type of loading was extremely damaging compared to standard fatigue. Anumber of methods of studying damage evolution in bonded joints subjected to fatigue and impactfatigue loading have been investigated and various parameters have been used to characterise theseprocesses. Two modifications of the accumulated time-stress model [1-4] are proposed and it isshown that both models provide a suitable characterization of impact-fatigue in bonded joints
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.347.653.pdf
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