Frozen strain moiré used in the analysis of impact loading

Tong, Jingwei; Li, H.Q.; Jia, Youquan

doi:10.1016/0143-8166(88)90028-0

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…There are many methods of measuring the thermal stress of the flat plates, such as the thermal photoelastic method, Moiré fringe method, laser speckle interferometer method, etc., and their measurement accuracies are reliable [13][14][15], but they were not suitable for our measurement equipment. In coordination with the thermostat container EL-04AG, a resistance strain gauge was designed and pasted on the surface of specimens to measure the thermal stress.…”

Section: Experiments Experimental Equipmentmentioning

confidence: 98%

Optimum Design of the Precise Surface Plate Based on Thermal Deformation Experiment and FEA

Liu

Yuan

2013

Journal of Thermal Stresses

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During the precision measurement and machining process, the temperature may change the shape and dimension of the machine parts. This kind of thermal deformation will lead to a decrease in the measurement accuracy and machining accuracy, and it will even affect the normal performance of the machinery. A precise flat plate is usually used as a benchmarking tool. Its flatness will be changed when the environmental temperature deviates from the standard temperature 20 C, which will influence the plate benchmark accuracy and result in erroneous measurement. The thermal deformation of conventional type and well-ribbed type precise flat plates were analyzed in this research. The finite element analysis software ANSYS simulation results indicated that their thermal deformation was not equal along the surface. The stress in the center was lower and showed a concentric circle distribution, while the stress at four corners was higher. So a ring-ribbed type precise flat plate was designed, and its ANSYS simulation and experimental results revealed that the ring-ribbed type flat plate had better anti-thermal deformation behavior, and its flatness was changed less with the temperature. Based on our research, it is suggested that the ring-ribbed type precise flat plate should take precedence in designing datum plane.

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Section: Experiments Experimental Equipmentmentioning

confidence: 98%