Miniature extensometer of low stiffness, has two anchoring blocks on the measured surface which are connected by a sheet metal element in Z or V form with a local reduction in width

摘要

Two anchoring blocks (2.1) are fixed to a measured surface and connected by a thin structure (2.2). The thin structure which may be obtained by folding or machining metal plate has a reduced section (2.3) which carries a strain gauge bridge. A lengthening in either sense of the distance between the anchoring blocks produces positive and negative bending in the strain gauge measuring zone