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弹性模量(简称“弹模”)试验是材料常规力学性质试验中较为繁琐的项目之一。以往多使用千分表或杠杆引伸仪作为测量试件变形的手段,但有费时、费事、精度不够满意、使用受到一定限制等缺点。目前广泛采用的电阻应变片电测弹模法,虽然精度较高,测试方便可靠,但我们在长期试验工作中感到常规电测法尚有不足之处:1)应变片的粘贴和干燥工艺费时费事,不能及时为工程提供弹模数据;2)对松软脱粉和吸水饱和试件,因无法贴牢
Elastic modulus (referred to as “elastic modulus”) test is one of the more cumbersome projects in the routine mechanical properties of materials. In the past, more use of dial indicator or lever extensometer as a means of measuring the deformation of the specimen, but time-consuming, costly, not satisfactory enough accuracy, the use of certain limitations and other shortcomings. Currently widely used resistance strain gauge electrical measuring elastic modulus method, although the accuracy is high, the test is convenient and reliable, but in the long-term test work we feel there are some shortcomings of the conventional electrical measurement: 1) Strain Glue and drying process time-consuming Trouble, can not provide the project in time for the elastic modulus data; 2) soft powder and water saturated sample,