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Department of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang University=Poissons ratio To find K:Department of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang University The metallic strain gauge consists of a very fine wire or,more commonly,metallic foil arranged in a grid pattern.The grid pattern maximizes the amountof metallic wire or foil subject to strain in the parallel direction Department of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityT=4m,L=100 m,w=4 m,E=2 x 1011 N/m2,and F=10-7 N.=3x10-6 or 0.03%for K=100Department of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang UniversityOption 1:single wavelength,observe fringes resulting from interferenceOption 2:white light source,observe spectrum change due to pressure-sensing wavelength dependent rotatorDepartment of Optical EngineeringZhejiang UniversityFor fused silicaDepartment of Optical EngineeringZhejiang UniversityDepartment of Optical EngineeringZhejiang University
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