What is it about?
Using the methods which are applied for estimating strength and toughness of composites reduces trial-and-error rate in their design. One of the mechanisms for strengthening and increasing toughness of composites is through debonding mechanism. Interface strength of reinforcement with matrix and effective surface of debonding greatly affect toughness and strength of these types of materials. In this study, a model was proposed to estimate the effect of interface and matrix strength of composites in increasing tensile toughness and strength. Then, interface strength and its effect in increasing tensile toughness and strength were calculated in a case study of composites containing particle reinforcement in matrix of steel.
Why is it important?
High-performance steels have high strength, hardness, abrasion resistance and toughness along with reasonable price. In general, hardness and strength are inversely related to toughness, which limits application of steels. In order to overcome this problem, engineers have started to produce composites with hard and abrasion resistant reinforcements. Factors such as adequate strength for the interface between reinforcement and matrix have challenged successful production of this type of material. Furthermore, uniformity of properties in these materials is a requirement for using very fine reinforcements that are almost finer than one micron and are highly dispersed, which leads to problems like agglomeration of reinforcement
The following have contributed to this page: Dr Seyed Ebrahim Vahdat