A Unique and Rational Applications Methodology for Fiber Composite Laminates

2017 ◽  
Vol 84 (10) ◽  
Author(s):  
Richard M. Christensen
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Composite Laminates ◽  
Fiber Composite ◽  
Matrix Composites ◽  
Specific Design ◽  
Failure Theory ◽  
Lamination Theory ◽  
Polymeric Matrix Composites ◽  
Fiber Composite Materials

An applications methodology is synthesized from the research-based development of failure theory for orthotropic fiber composite laminates. In effect, this work continues and completes the work of Christensen (2017, “Lamination Theory for the Strength of Fiber Composite Materials,” ASME J. Appl. Mech., 84(7), p. 071007). This failure theory applies for the condition of fiber-dominated behavior, appropriate to carbon fiber—polymeric matrix composites and such similar systems. A lamination theory for stiffness and a separate lamination theory for strength are the outcomes derived here. Final forms are given for 0, 90, ± 45 type orthotropic laminates, with the four lamina orientation volume fractions to be specified in any particular application of interest. Many examples are given of using the new methodology in specific design cases.

Lamination Theory for the Strength of Fiber Composite Materials

2017 ◽  
Vol 84 (7) ◽  
Author(s):  
Richard M. Christensen
Keyword(s):  
Composite Materials ◽  
Failure Criterion ◽  
Composite Laminates ◽  
Fiber Composite ◽  
Relative Volume ◽  
Complete Failure ◽  
Lamination Theory ◽  
Laminated Materials ◽  
Fiber Composite Materials ◽  
Special Case

Building upon the previous work for the failure of quasi-isotropic fiber composite laminates, the much more difficult and more important general case of orthotropic laminates is now taken up. The full and complete failure criterion is derived for fiber dominated, general 0, 90, ±45-deg laminated materials, with the relative volume fractions to be specified for each direction. Quasi-isotropy is a special case of the orthotropic formalism, and the general orthotropic results are just as rigorous as the previous specialized quasi-isotropic results. The orthotropic failure criterion results are of direct and immediate relevance in composite materials applications.

Fracture toughness characterization of nanoreinforced carbon-fiber composite materials for damage mitigation

2011 ◽  
Author(s):  
Jennifer A. VanderVennet ◽  
Terrisa Duenas ◽  
Yuris Dzenis ◽  
Chad T. Peterson ◽  
Charles E. Bakis ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Fiber Composite ◽  
Carbon Fiber Composite ◽  
Damage Mitigation ◽  
Fiber Composite Materials

Research on Carbon Fiber Composite Materials and F1 Racing Automobile Design

2013 ◽  
Vol 454 ◽  
pp. 263-267 ◽  
Author(s):  
Hai Tao Yin ◽  
Ming Mei Lang ◽  
Yun Na Zhao
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Structural Design ◽  
Fiber Composite ◽  
Carbon Fiber Composite ◽  
Development History ◽  
Automobile Design ◽  
Design And Manufacturing ◽  
History Of ◽  
Fiber Composite Materials

Composite is composed of two or more materials and its main performance is significantly different from that of each material constituting it. Each material has an appropriate quality proportion. This paper summarizes performance features of carbon fiber composite, introduces the use and development history of composite in F1 automobile race, analyzes the structural design and manufacturing process of composite in F1 racing automobile and puts forward the performance of carbon fiber composite to be improved in F1 racing automobile.

Design and Fabrication of an Arm Exoskeleton for Aim Stabilization

2013 ◽  
Author(s):  
Daniel M. Baechle ◽  
Eric D. Wetzel ◽  
Sunil K. Agrawal
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Adaptive Algorithm ◽  
Degrees Of Freedom ◽  
Fiber Composite ◽  
Carbon Fiber Composite ◽  
Aiming Movements ◽  
Voluntary Motion ◽  
Fiber Composite Materials

Accurately aiming and firing a pistol requires a steady hand. While many devices can steady a shooter’s arm or hand by restricting movement or degrees-of-freedom, few devices actively reduce involuntary tremors while allowing larger voluntary aiming movements. This paper details the design and fabrication of an arm exoskeleton that can actively damp arm tremors while allowing voluntary aiming movements. The device allows five degrees-of-freedom and is very lightweight due to its cable-driven architecture and use of carbon fiber composite materials. Tremorous movement is filtered out from voluntary motion, and an adaptive algorithm provides a tremor-cancelling signal to the cable control motors.

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