TRANSVERSE FATIGUE RESPONSE OF A METAL-MATRIX COMPOSITE UNDER STRAIN-CONTROLLED MODE AT ELEVATED-TEMPERATURE .2. ANALYSIS

The present paper is a continuation of Part I to investigate the trans verse fatigue behavior of a unidirectional titanium-based metal matrix composite (MMC) (SCS-6/Ti-15-3) at elevated temperature. In Part I of this paper, fatigue tests were conducted under the strain-controlled mode, and a systematic microscopic evaluation was undertaken to identi fy the damage and deformation mechanisms. In this paper (Part II), the fatigue response is modeled using a micromechanical approach where th e fiber-matrix interfacial damage is incorporated along with the inela stic behavior of the matrix. The analysis provided additional insight into the transverse fatigue response of the MMC. Combining the results obtained from this micromechanical analysis, and that obtained from t he macroscopic response (that is, stress and modulus) and microscopic evaluation in Part I, the transverse fatigue response of the MMC was t horoughly characterized.