Non-destructive testing of multi-filamentary coated conductors by combination of a high-speed scanning laser observation system and a SQUID gradiometer array system

2011 ◽  
Vol 471 (21-22) ◽  
pp. 1045-1049
Author(s):  
T. Hato ◽  
S. Adachi ◽  
T. Machi ◽  
K. Tanabe
Keyword(s):  
High Speed ◽  
Coated Conductors ◽  
Scanning Laser ◽  
Observation System ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive

Non-Destructive Testing of Each Layer in GdBCO IBAD-PLD Coated Conductor by Using a High-Speed Scanning Laser Observation System

2011 ◽  
Vol 21 (3) ◽  
pp. 3381-3384 ◽  
Author(s):  
Tsunehiro Hato ◽  
Seiji Adachi ◽  
Takato Machi ◽  
Noriko Chikumoto ◽  
Masateru Yoshizumi ◽  
...  
Keyword(s):  
High Speed ◽  
Scanning Laser ◽  
Observation System ◽  
Coated Conductor ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive

A Review of Ultrasonic Application on Non-destructive Testing Method for Concrete Structure

2014 ◽  
Vol 70 (3) ◽  
Author(s):  
Nasarudin Ahmad ◽  
Ruzairi Abdul Rahim ◽  
Herlina Abdul Rahim ◽  
Mohd Hafiz Fazlul Rahiman
Keyword(s):  
Concrete Structure ◽  
High Speed ◽  
Structural Integrity ◽  
Surface Hardness ◽  
Concrete Surface ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Surface Absorption ◽  
Processing Techniques ◽  
Non Destructive

Although the technique of using ultrasound has reached maturity by given the extent of the development of sensors, but the use of the various areas still can be explore. Many types of ultrasonic sensors are still at conventional in use especially for measurement equipment in the industry. With the advancement of signal processing techniques, high-speed computing, and the latest techniques in image formation based Non-destructive testing (NDT) methods, the usage of ultrasound in concrete NDT testing is very extensive because the technique is very simple and should not damage the concrete structure to be investigated. Many of the parameters need to be tested using ultrasound techniques to concrete can be realized. Starting with the initial process for of concrete mixing until the concrete matured to the age of century old. Various tests are available to test a variety of non-destructive of concrete completely, in which there is no damage to the concrete, through those where the concrete surface is damaged a bit, to partially destructive testing, such as core tests and insertion and pull-off test, which surface to be repaired after the test. Testing parameter features that can be evaluated using non-destructive testing and destructive testing of some rather large and include basic parameters such as density, elastic modulus and strength and surface hardness and surface absorption, and reinforcement location, size and distance from the surface. In some cases it is also possible to check the quality of the workmanship and structural integrity of the ability to detect voids, cracks and delamination. A review of NDT using ultrasound on concrete are presented in this paper to highlight the important aspect to consider when one to consider the application and development of ultrasound testing on concrete by considering ultrasound signal capturing, processing and presenting.

Numerical Simulation of Impact-Echo Method Identify the Depth of Honeycomb Damage in Unballasted Track

2014 ◽  
Vol 584-586 ◽  
pp. 2060-2067 ◽  
Author(s):  
Chang Sheng Zhou ◽  
Ping Wang ◽  
Zhi Peng Hu ◽  
Hao Zhu
Keyword(s):  
High Speed ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Impact Echo ◽  
Finite Element Software ◽  
Ballastless Track ◽  
The Impact ◽  
Non Destructive ◽  
Impact Echo Method ◽  
Peak Value

Through the honeycomb damage that is appear in unballasted track will affect the safe operation of high-speed train, accurate detection of honeycomb damage is very important. Impact-echo method is a non-destructive testing method. Based on the principle of impact echo, author using the finite element software ANSYS LS-DYNA3D to simulate the impact-echo, testing and verifying the feasibility and accuracy of impact-echo method in discerning unballasted track damage. By analyzing the calculated result of honeycomb damage in slab track and double-block ballastless track, it is shows that: according to back calculate the depth of damage base on the peak value in acceleration spectrum graph, the honeycomb damage in different depth can be accurate located.

Thermal Imaging Analysis of Stimulated Heat Diffusion in Sheet Metal for Non-Destructive Metrology and Testing

2005 ◽  
Vol 6-8 ◽  
pp. 681-688
Author(s):  
B. Spellenberg ◽  
J. Zettner ◽  
T. Hierl ◽  
M. Haller ◽  
T. Lenzi
Keyword(s):  
Heat Flux ◽  
Data Processing ◽  
High Speed ◽  
Temporal Analysis ◽  
Heat Diffusion ◽  
Flux Analysis ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Infrared Cameras ◽  
Non Destructive

Recent developments in infrared camera technology, testing methods and data processing algorithms have brought significant progress for high resolution spatial and temporal analysis of thermal radiation. Together with industry standard automation technology and specific infrared image data processing it became possible to non destructively inspect laser welded seams and other types of joints using heat flux analysis subsequent to thermal stimulation. High thermal diffusion coefficients of the usually metallic samples under test make the availability of high-speed infrared cameras as a key hardware component indispensable. Since high-speed infrared cameras with frame rates of at least 500 Hz have become available for commercial applications, non-destructive testing systems with a new class of performance were designed, manufactured, and implemented at industrial sites. Heat flux analysis as a new and robust method of non-destructive testing has been implemented for various types of equipment, ranging from off-line tools for laboratory use to automated robot based systems enabling fast and operator-free in-line inspection. Depending on environment, implementation surroundings, and geometry of objects to be inspected, different types of pulsed or continuous operating heat sources (e.g. flash light, laser, … ) are selected. Due to its outstanding industrial relevance non-destructive testing of laser welded seams in automobile manufacturing is shown in detail in this paper.

Effect of Microfillers on Selected Destructive and Nondestructive Mechanical Properties of Cement Mortars: Different Types of Recycled Materials

2016 ◽  
Vol 722 ◽  
pp. 195-200
Author(s):  
Tomáš Plachý ◽  
Pavel Tesárek ◽  
Lukáš Hlubocký ◽  
Jaromír Hrůza ◽  
Jozef Fládr ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
Resonance Method ◽  
Recycled Concrete ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Measuring Device ◽  
Cement Mortars ◽  
Marble Powder ◽  
Non Destructive

The paper presents the use of non-destructive testing to determine the evolution of mechanical properties. For testing, we used the resonance method. The measuring device of company Brüel&Kjær was used. Specifically, evolution of dynamic modulus of elasticity (determined from the longitudinal and transverse vibration) and the shear modulus was determined for the first 28 days after production of the samples. The results of non-destructive method were also used for verifying the relevance of the results of destructive testing, specifically the results of the compressive strength and a three-point flexural strength. Testing of mechanical properties was performed on samples of cement mortars, where the micronized recycled concrete and micronized marble powder were used as microfillers, both materials were prepared on a high-speed mill of the Lavaris company (Czech Republic).

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