Robust non-destructive measurement system for extraction of ultrasonic wave parameters using the prism technique

It discusses the measurement principle and the system design of 3D non-destructive measurement method for the homogeneous entity. The measurement project and its operating process is discussed. The basic operation principle and components of this measurement device are pointed out. It included the digitized minute entity cells and the delaminated measuring method for product profiles based on liquid. It is based on Archimedes' principle and lever principle and gravity moment, combined the equations of the gravity moment and the equations of the center of gravity, the 3D coordinate values of every minute entity cell in different layers can be reckon by computer. By inputting the 3D coordinate values of the product into the related CAD software system, the 3D model could be obtained. The principles, the system software were introduced in details about the measurement system of the homogeneous entity profiles. Proved through principium experiment, the system satisfies the request of the measuring precision. The measurement system is effective and feasible.

Download Full-text

Research on 3D Non-Destructive Measurement System Based on Homogeneous Entity

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.201-203.63 ◽

2011 ◽

Vol 201-203 ◽

pp. 63-68 ◽

Cited By ~ 1

Author(s):

Yong Gan ◽

Jing Ru Zhong ◽

Du Fen Gan

Keyword(s):

Measurement System ◽

3D Model ◽

Measuring Method ◽

Center Of Gravity ◽

Software System ◽

Optic System ◽

Destructive Measurement ◽

Non Destructive

A new non-destructive measurement system of the homogeneous entity profiles was designed; it included the digitized minute entity cells and the delaminated measuring method for product profiles based on liquid. It is based on Archimedes' principle and lever principle and gravity moment, used optic system to collect images and calculated the verge profiles, combined the equations of the gravity moment and the equations of the center of gravity to reckon the 3D coordinate values of every minute entity cell in different layers by computer. By inputting the 3D coordinate values of the product into the related CAD software system, the 3D model could be obtained. The principles, hardware and software of the system were introduced in details about the measurement system of the homogeneous entity profiles.

Download Full-text

Determining the Thickness and Refractive Index of a Birefringence by Using an Improved Accurate Measurement System

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.364-366.510 ◽

2007 ◽

Vol 364-366 ◽

pp. 510-515

Author(s):

Yen Liang Yeh ◽

Cheng Chi Wang ◽

Ming Jyi Jang ◽

Yen Pin Lin ◽

Kuang Sheng Chen

Keyword(s):

Refractive Index ◽

Measurement System ◽

Experimental Error ◽

Refractive Indices ◽

Optical Parameters ◽

Optical Wave ◽

Measurement Resolution ◽

Destructive Measurement ◽

Non Destructive ◽

Optical Sample

This paper presents a high-precision, non-destructive measurement system for determining the thickness and refractive indices of birefringent optical wave plates. Significantly, the proposed method enables the two refractive indices of the optical sample to be measured simultaneously. The performance of the proposed system is verified using a commercial quartz optical wave plate with known refractive indices of 1.5518 e n = and 1.5427 o n = , respectively, and a thickness of 452.1428 μm. The experimentally determined values of the refractive indices are found to be 1.55190 e n = and 1.54281 o n = , respectively, while the thickness is found to be 452.189 μm, corresponding to an experimental error of approximately 0.046 μm. The measurement resolution of the proposed system exceeds that of the interferometer hardware itself and provides a simple yet highly accurate means of measuring the principal optical parameters of birefringent glass wave plates.

Download Full-text