Testing, Analysis and Inspection of Composite Materials
To reduce weight and increase fuel economy, aerospace and automotive designers are increasingly using lightweight composite materials such as carbon fiber reinforced plastics (CFRP). CFRPs offer high strength with reduced weight making them ideal for high-performance applications.
Thorough characterization of composites is essential to ensure effective modeling and safe adoption of these new materials in final products. Shimadzu offers a complete range of characterization tools to evaluate the mechanical and thermal behavior of composites.
Verification and Validation (V&V) of Uniaxial Tensile Test Simulation Results of Composite Materials
In conventional product design development, there was a time when design work was considered complete with only CAE analysis. Today, however, actual measurement
under the same conditions as the CAE analysis model and verification by comparison of those results and the CAE analysis results to validate the appropriateness of
the simulation results (V&V: Verification and Validation) is considered important. As a result, product desig utilizing both actual measurement and CAE analysis is
becoming a general social requirement. This article presents an outline of the distinctive features of composite materials related to CAE analysis, and based thereon, introduces examples of V&V by comparison of the CAE analysis results with the results of actual measurements of a Carbon Fiber Reinforced Thermo Plastics (CFRTP) fabric material.
High-Speed Tensile Test of Carbon Fiber Reinforced Plastics (CFRP)
The image illustrates the breakage of the CFRP by the high-speed tensile testing machine. The CFRP fractures instantaneously at the limit load, so a recording speed of 10 million frames/second is required to capture the fracturing process in detail.
Recording speed: 10 million frames/second
Width of field of view: Approx. 10 mm
Ensuring Compliance with ASTM Standards for Mechanical Testing of Plastics and Composites
CFRP Analysis, Testing and Inspection Evaluation Instruments
Visualization of Progress of Internal Damage in Carbon Fiber Composite Materials and Mechanism of Impact Strength
Fiber reinforced plastics (FRP) have higher mechanical properties per unit weight than metal materials such as steel and aluminum and therefore are used now as substitute materials for metals in a variety of industrial products. Particularly in recent years, high quality carbon fibers, resin-impregnated prepregs containing those fibers, and advanced molding technologies have been developed. As a result, FRP has now gained wide acceptance and has an extensive record of actual use, and is also beginning to be used in main structural parts of aircraft and automobiles, in which high reliability is essential. However, in the case of carbon fiber reinforced plastic (CFRP), which consists of carbon fiber and resin, in combination with the existence of adhesive interfaces, the failure process also has an extremely complex mechanism.
Carbon fiber is an important industrial material, being essential in carbon fiber reinforced plastics (CFRP), having a specific gravity one-fourth that of normal steels, and a specific strength of 7 times. In this Application Data Sheet,
examples of tensile testing of single carbon fibers based on the ISO standard are introduced.