Hydrothermal effects on mechanically fastened glass/polypropylene composite joints

1994 ◽  
Vol 15 (6) ◽  
pp. 408-417
Author(s):  
Ohru Morii ◽  
Hiroyuki Hamada ◽  
Zen-Ichiro Maekawa ◽  
Toshio Tanimoto
Keyword(s):  
Composite Joints ◽  
Polypropylene Composite ◽  
Mechanically Fastened

Failure analysis of mechanically fastened glass fiber/epoxy composite joints under thermal effects

2013 ◽  
Vol 45 (1) ◽  
pp. 192-199 ◽  
Author(s):  
Ibrahim Fadil Soykok ◽  
Onur Sayman ◽  
Mustafa Ozen ◽  
Behiye Korkmaz
Keyword(s):  
Failure Analysis ◽  
Glass Fiber ◽  
Thermal Effects ◽  
Epoxy Composite ◽  
Composite Joints ◽  
Mechanically Fastened

Time–temperature-dependent response and analysis of preload relaxation in bolted composite joints

2018 ◽  
Vol 37 (7) ◽  
pp. 460-474 ◽  
Author(s):  
Jiaxin Lv ◽  
Yi Xiao ◽  
Yuande Xue
Keyword(s):  
Prediction Model ◽  
Superposition Principle ◽  
Significant Loss ◽  
Experimental Program ◽  
Strong Temperature Dependence ◽  
Composite Joints ◽  
Accelerated Test ◽  
Short Term ◽  
Mechanically Fastened

Although mechanically fastened joints are generally considered a mature technology, significant problems still exist with their use, among which the preload loss in pretensioned bolts is a major one. This paper has investigated two key issues in structural durability design for mechanically fastened composite joints, i.e. temperature–time-dependent behavior for viscoelastic preload relaxation and prediction method for its long-term performance. Towards this purpose, a two-phase experimental program was conducted consisting of short- and long-term joint relaxation tests. Phase I monitored the short-term fastener preload relaxation (up to 36 h), with a special self-made bolt strain sensor. Phase II utilized the time–temperature superposition principle to establish a method of using short-term relaxation curves to construct the long-term master curve (accelerated test). It was found that there was a significant loss of bolt preload when temperature and initial preload increased, and the relaxation rate of composited joint was much larger than that of the metallic joint. Based on the strong temperature dependence of bolt relaxation, accelerated characterization was conducted for long-term behavior. Furthermore, to quantitatively relate the relaxation data to a model equation, a new preload prediction model was developed based on the creep total-strain theory. Comparisons of the prediction model and accelerated test results indicated that the improved model provided better accuracy than existing models such as Shivakumar–Crews’s and Hook-Norton’s models for describing the long-term preload behavior.

Optimum design considerations for mechanically fastened composite joints

1990 ◽  
Vol 16 (1-3) ◽  
pp. 85-101 ◽  
Author(s):  
W.S. Arnold ◽  
I.H. Marshall ◽  
J. Wood
Keyword(s):  
Optimum Design ◽  
Composite Joints ◽  
Design Considerations ◽  
Mechanically Fastened

scholarly journals Strength of Mechanically Fastened Composite Joints

1982 ◽  
Vol 16 (6) ◽  
pp. 470-494 ◽  
Author(s):  
Fu-Kuo Chang ◽  
Richard A. Scott ◽  
George S. Springer
Keyword(s):  
Composite Joints ◽  
Mechanically Fastened
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