Nondestructive evaluation of materials using an inserted piezoelectric sensor-correlation with hardness measurements

1995 ◽  
Vol 42 (4) ◽  
pp. 641-648 ◽  
Author(s):  
I. Perrissin-Fabert ◽  
Y. Jayet ◽  
R. El Guerjouma
Keyword(s):  
Nondestructive Evaluation ◽  
Piezoelectric Sensor

Effects of contact gap on nondestructive evaluation using magnetic measurement for ferromagnetic steel

2020 ◽  
Vol 64 (1-4) ◽  
pp. 969-975
Author(s):  
Hiroaki Kikuchi ◽  
Yuki Sato
Keyword(s):  
Magnetic Flux ◽  
Nondestructive Evaluation ◽  
Effective Permeability ◽  
Magnetic Circuit ◽  
Magnetic Measurement ◽  
Air Gap ◽  
Motive Force ◽  
Hysteresis Curve ◽  
Evaluation Technique ◽  
Ferromagnetic Steel

We investigated effects of contact gap on magnetic nondestructive evaluation technique using a magnetic single-yoke probe. Firstly, we evaluated hysteresis curves and impedance related to permeability of the material measured by a single-yoke probe, when an air gap length between the probe and specimens changes. The hysteresis curve gradually inclines to the axis of the magneto-motive force and magneto-motive force at which the magnetic flux is 0 decreases with increasing the gap length. The effective permeability also decreases with increasing the gap thickness. The incremental of gap thickness increases the reluctance inside the magnetic circuit composed of the yoke, specimen and gap, which results in the reduction of flux applying to specimen.

A Framework for Computational Nondestructive Evaluation of Degraded Composites with Microscale Discontinuities

2020 ◽  
Vol 78 (1) ◽  
pp. 104-118
Author(s):  
Sajan Shrestha ◽  
◽  
Vahid Tavaf ◽  
Sourav Banerjee
Keyword(s):  
Nondestructive Evaluation

Nondestructive Evaluation of Additively Manufactured Metal Components with an Eddy Current Technique

2018 ◽  
Author(s):  
Benjamin Schneider ◽  
◽  
Mohammad Rashid Bin Mohammad Shoaib ◽  
Hossein Taheri ◽  
Lucas Koester ◽  
...  
Keyword(s):  
Nondestructive Evaluation ◽  
Eddy Current ◽  
Current Technique

Analysis of AC-DC Converter Circuit Performance with Difference Piezoelectric Transducer Array Connection

2020 ◽  
Vol 12 (7) ◽  
Author(s):  
Nik Ahmad Zainal Abidin ◽  
◽  
Norkharziana Mohd Nayan ◽  
Azuwa Ali ◽  
N. A. Azli ◽  
...  
Keyword(s):  
Piezoelectric Transducer ◽  
Simulation Analysis ◽  
Piezoelectric Sensor ◽  
Transducer Array ◽  
Circuit Performance ◽  
Array Configuration ◽  
Full Wave ◽  
Bridge Rectifier ◽  
In Series ◽  
Parallel Voltage

This research presents a simulation analysis for the AC-DC converter circuit with a different configurations of the array connection of the piezoelectric sensor. The selection of AC-DC converter circuits is full wave bridge rectifier (FWBR), parallel SSHI (P-SSHI) and parallel voltage multiplier (PVM) with array configuration variation in series (S), parallel (P), series-parallel (SP) and parallel-series (PS). The system optimizes with different load configurations ranging from 10 kΩ to 1 MΩ. The best configuration of AC-DC converter with an appropriate array piezoelectric connection producing the optimum output of harvested power is presented. According to the simulation results, the harvested power produced by using P-SSHI converter connected with 3 parallel piezoelectric transducer array was 85.9% higher than for PVM and 15.88% higher than FWBR.

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