Application of Nondestructive Testing Technology in Road and Bridge Testing

2021 ◽  
Keyword(s):  
Nondestructive Testing ◽  
Bridge Testing ◽  
Testing Technology

Three Dimensional Detection of the via in the PCB CT Image Using Morphology Operation

2015 ◽  
Vol 752-753 ◽  
pp. 1406-1412
Author(s):  
Lei Zeng ◽  
Jian Chen ◽  
Han Ning Li ◽  
Bin Yan ◽  
Yi Fu Xu ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Printed Circuit Board ◽  
Three Dimensional ◽  
Detection Algorithm ◽  
Circuit Board ◽  
Dimensional Structure ◽  
Three Dimension ◽  
Shape Information ◽  
Printed Circuit ◽  
Testing Technology

In modern industry, the nondestructive testing of printed circuit board (PCB) can prevent effectively the system failure and is becoming more and more important. As a vital part of the PCB, the via connects the devices, the components and the wires and plays a very important role for the connection of the circuits. With the development of testing technology, the nondestructive testing of the via extends from two dimension to three dimension in recent years. This paper proposes a three dimensional detection algorithm using morphology method to test the via. The proposed algorithm takes full advantage of the three dimensional structure and shape information of the via. We have used the proposed method to detect via from PCB images with different size and quality, and found the detection performances to be very encouraging.

Application of Nondestructive Testing in Bridge Structure Quality Detection

2011 ◽  
Vol 66-68 ◽  
pp. 1122-1125
Author(s):  
Jing Xi Chen ◽  
Li Yuan ◽  
Guang Zhang
Keyword(s):  
Nondestructive Testing ◽  
Electromagnetic Induction ◽  
Bridge Structure ◽  
Induction Method ◽  
Actual Measurement ◽  
Structure Quality ◽  
Advantages And Disadvantages ◽  
Quality Detection ◽  
Testing Technology

This paper discusses recent nondestructive testing technology in the application of bridge structure, which focus on common rebound method and electromagnetic induction method. According to the actual measurement problems, the article explains the rebound method and electromagnetic induction method including their advantages and disadvantages, and puts forward the method of avoiding problems.

Automation of Nondestructive Testing Technology Cards Creation

NDT World ◽  
2017 ◽  
pp. 32-34
Author(s):  
Москвичева ◽  
Irina Moskvicheva ◽  
Ковшов ◽  
Evgeniy Kovshov ◽  
Полковников ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Testing Technology

scholarly journals Nondestructive Damage Testing of Beam Structure Based on Vibration Response Signal Analysis

Materials ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3301
Author(s):  
Xiaohao Li ◽  
Deyu Shi ◽  
Zihang Yu
Keyword(s):  
Nondestructive Testing ◽  
Signal Analysis ◽  
Unscented Kalman Filter ◽  
High Sensitivity ◽  
Vibration Signal ◽  
Structural Defects ◽  
Response Analysis ◽  
Identification Algorithm ◽  
Testing Technology ◽  
Vibration Signal Analysis

Nondestructive damage-testing technology based on vibration signal analysis makes full use of the response characteristics of wave and energy. With the advantages of wide bandwidths of response frequency and high sensitivity, the nondestructive testing technology based on vibration signal analysis has a superiority in the application for the detection and characterization of structural defects, and has become one of the important methods for the nondestructive testing of structural material defects and damage. This paper presents a novel method of detection localization and quantitative analysis for local damage in beam structures, based on the response analysis of vibration signals. A damage-detection and -identification algorithm based on a unscented Kalman filter (UKF) was designed, which greatly reduces the computational workload in the process of damage identification over that in conventional methods. The method presented in this paper has significances to widen the application scope of the nondestructive testing method, and increase the recognition efficiency and effectiveness of this kind of method in engineering.

Variation of larch wood property indexes based on nondestructive testing data

BioResources ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. 2906-2923
Author(s):  
Liting Cheng ◽  
Jian Dai ◽  
Zhiguo Yang ◽  
Wei Qian ◽  
Wei Wang ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Stress Wave ◽  
Material Properties ◽  
Wood Property ◽  
Reference Value ◽  
Larch Wood ◽  
Larch Species ◽  
Testing Technology ◽  
Light Side ◽  
Micro Drill

To quickly evaluate the material properties of ancient wooden structure members on site, the larch species of northeastern China was used as the research object, and the nondestructive testing method of the stress wave and the micro-drill resistance meter were used to measure it. The variation laws of the larch wood’s cross and longitudinal property indexes were determined. According to the variation law of material property indexes, the detection divisions under the nondestructive testing technology of stress wave and micro-drill resistance instruments were divided, which provides a basis for improving the accuracy of on-site nondestructive testing. From the comparison of shade and light side data, it was found that there was little difference in material properties indexes. According to the change trend of larch wood with density, the pith, juvenile wood, mature wood, and overmature wood were divided, which provided a reference value for the study of wood growth laws.

Experimental Study of Pile Foundation Dynamic Testing Used in the Anchor Rod Nondestructive Testing

2012 ◽  
Vol 166-169 ◽  
pp. 559-562
Author(s):  
Li Wei Zhang ◽  
Wei Shi ◽  
Yu Na Zou ◽  
De Sheng Zhu
Keyword(s):  
Nondestructive Testing ◽  
Stress Wave ◽  
Pile Foundation ◽  
Dynamic Testing ◽  
Solid Material ◽  
Wave Theory ◽  
Small Strain ◽  
Elastic Rod ◽  
Testing Technology

The dynamic testing of stress wave reflection method is an easy, economical, rapid and reliable nondestructive testing technology and has been perfected used in the pile foundation dynamic testing. Anchor rod is more in line with the wave theory of one-dimensional elastic rod than pile foundation whether to theory or the geometric solid, material, stress state and other factors. The quality of anchor rod is determined by using small strain method (hammering method) of pile foundation dynamic measurement. Four testing anchor rods with different length and integrity were made in project of "China Marine Sport School", stress wave time domain curve of anchor rod was obtained by ZK-7E portable intelligent testing of piles instrument, defect location, length of anchor rod and integrity reflected by measured waveform are consistent with the actual situation, the method using pile foundation dynamic testing technology for anchor rod nondestructive testing is proved feasible and reliable.

Sign in / Sign up

Export Citation Format

Share Document