Detection Method for the Internal Defect of the Part Based on the Lever Balance Principle

Abstract:

Abstract: A detection method for the internal defect of the part based on the lever balance principle was presented; the defect method realized indirectly the nondestructive measurement through the relation of the volume and mass of the part’s internal pore or crack and the force change in the lever balanced system. On the basis of the relation of the part’s weight and the balances of the forces and the moments, the forces of the different position was measured in the lever balanced system after the part moved the minute distance through the fulcrum according to a certain directions. It calculated the every lamellar mass of the part and the coordinate values of the corresponding lamellar. Combined the equations of every lamellar masses and the equations of the center of gravity, and established the database of the every lamellar masses, it can realize the non-destructive detection for the internal defect of the part by computer. The measure principles, the mathematical theory basis and the detection method for the part’s internal pore or crack were introduced in details about the detection method based on the lever balance principle. The detection method can be operated simply and feasible and credible.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 511-514
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.511
• Online since: February 2013
• Authors: Yong Gan, Yu Gang Li, Fu Zhi Zhang
• Keywords: 3D Measurement, Homogeneous Entity, Non-Destructive Measurement, Static Balance

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