Test piece forming method for measuring e.g. mechanical resistance property, involves forming test piece having larger thickness than final test piece by fabrication process e.g. molding process

摘要

#CMT# #/CMT# The method involves forming a test piece having larger thickness than a final test piece by a fabrication process e.g. molding process. A part of a surface (c) of the test piece is formed by another fabrication process e.g. machining process, whose mechanical qualities are better than the former fabrication process in order to obtain a geometry suitable to a desired multiaxial solicitation, where the part includes a useful zone (10) having lesser thickness. #CMT# : #/CMT# An independent claim is also included for a test piece comprising a useful zone. #CMT#USE : #/CMT# Used for forming a test piece on a tensile testing machine for measuring a mechanical fatigue property e.g. mechanical resistance, tensile, resilience and hardness properties, due to a multiaxial solicitation of a mechanical structure or an alloy fabricated in a given material (claimed). #CMT#ADVANTAGE : #/CMT# The method allows to form the test piece for measuring a mechanical fatigue property e.g. mechanical resistance property, due to the multiaxial solicitation of a mechanical structure in an improved and cost effective manner. The method permits to eliminate constraints for the molding process on the geometry of the useful zone of the test piece and provides a simple testing process. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a transversal sectional view of a test piece. a, c : Test piece`s surfaces 10 : Useful zone.