STUDIES ON A NEW APPROACH OF CAVITATION EROSION TEST FOR NON-METALLIC MATERIALS

摘要

The paper deals with the studies on the reconstruction and innovation of ordinaryrnmagnetostriction apparatus for cavitation erosion tests of non-metallic materials. Itrnaims at making testing specimen to be independent with amplitude amplifier rod eachrnother, thus solving the problem of difficulties to fix tightly the non-metallic specimen tornthe vibrating rod. Such approach makes the exposure area greatly increased andrneffectively mitigates the effect on the testing result due to non-homogeneity of nonmetallicrnspecimen, thus extending the application of magnetostriction apparatus torncarry out cavitation erosion tests to larger size of non-metallic and non-homogeneousrnmaterials. It will render a set of new innovative apparatus and recently developedrnmethod to conduct fast and simple cavitation erosion test to be carried out in days torncome. Simultaneously several non-metallic materials have been made by means ofrnsuch new apparatus yielding satisfactory results and witnessing the availability ofrnnew method.