公开(公告)号：US07934424B2

公开(公告)日：2011-05-03

申请号：US11782229

申请日：2007-07-24

申请人： Mark J. McKenna ,  Joseph S. Heyman

发明人： Mark J. McKenna ,  Joseph S. Heyman

IPC分类号： G01N29/07

CPC分类号： G01N29/07 ,  G01H5/00 ,  G01N29/346 ,  G01N2291/02491 ,  G01N2291/02827

摘要： A material characteristic measurement approach measures an internal state of a material by measuring the nonlinear shift in velocity induced by different acoustic energies. The technology for implementing this measurement approach is relatively simple, robust, permits portable measurements, does not require that an unloaded initial condition of the material be measured or otherwise known in order to determine a characteristic of the material, can be applied using one or more transducers, and does not require physical contact with the material. Some example material characteristics include a residual stress existing without any external mechanical force applied, applied stress, a fatigue state, age, an interference-fit fastener stress, bio-activity, a nanostructure mixture of the material, a heat treatment of the material, a cross-linking of polymers in the material, a bio-growth organization of the material, a clotting factor of blood or blood-like material, a cure of an adhesive or sealant material, or the microstructure of the material.

摘要翻译： 材料特性测量方法通过测量由不同声能引起的速度的非线性偏移来测量材料的内部状态。 用于实施该测量方法的技术相对简单，稳健，允许便携式测量，不要求材料的未加载初始条件被测量或以其他方式被知道以便确定材料的特性，可以使用一个或多个 传感器，并且不需要与材料的物理接触。 一些示例性材料特征包括存在没有施加任何外部机械力的残余应力，施加的应力，疲劳状态，年龄，干涉配合紧固件应力，生物活性，材料的纳米结构混合物，材料的热处理， 材料中聚合物的交联，材料的生物生长组织，血液或血液样物质的凝血因子，粘合剂或密封剂材料的固化或材料的微观结构。