Application of laser ultrasonic non-destructive evaluation technique to additive manufacturing

2016 ◽  
Author(s):  
Anthony J. Manzo ◽  
Shant Kenderian ◽  
Henry Helvajian
Keyword(s):  
Additive Manufacturing ◽  
Evaluation Technique ◽  
Laser Ultrasonic ◽  
Non Destructive Evaluation ◽  
Non Destructive

scholarly journals Evaluation of Modulus of Elasticity of Laminated Strand Lumber by Non-Destructive Evaluation Technique

BioResources ◽  
2015 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhiqiang Wang ◽  
Jianhui Zhou ◽  
Meng Gong ◽  
Ying Hei Chui ◽  
Xiaoning Lu
Keyword(s):  
Modulus Of Elasticity ◽  
Evaluation Technique ◽  
Non Destructive Evaluation ◽  
Non Destructive

scholarly journals 2D size, position and shape definition of defects by B-scan image analysis

2015 ◽  
Author(s):  
Michele Scafidi ◽  
Donatella Cerniglia ◽  
Tommaso Ingrassia
Keyword(s):  
Image Analysis ◽  
Cross Section ◽  
Automatic Inspection ◽  
Structural Components ◽  
Laser Ultrasonic ◽  
Non Destructive Evaluation ◽  
Ultrasonic Techniques ◽  
Definition Of ◽  
B Scan Images ◽  
Non Destructive

The non-destructive evaluation of defects by automatic procedures is of great importance for structural components. Thanks to the developments of the non-contact ultrasonic techniques, the automation of the inspections is gaining a progressively important role. In this work, an automatic inspection technique for the evaluation of defects by the analysis of B-scan images obtained by a laser ultrasonic system is presented. The data are extracted directly from a B-scan map obtained for a panel with internal defects, and are used to build an image of the cross section of the panel. The proposed automatic procedure allows the definition of size, position and shape of defects in panels of known thickness.

X-Ray Computed Tomography: A Potentially Destructive “Non-Destructive Evaluation” Technique

2019 ◽  
Author(s):  
Ryan Ross ◽  
Gil Garteiz ◽  
Stephanie Zajac
Keyword(s):  
Computed Tomography ◽  
Evaluation Technique ◽  
Total Ionizing Dose ◽  
X Ray ◽  
Non Destructive Evaluation ◽  
X Ray Computed ◽  
Flight Hardware ◽  
Non Destructive

Abstract Characterization of Computed Tomography X-Ray ionizing dose will be presented along with a methodology to protect space bound flight hardware from exceeding total ionizing dose (TID) budget prior to mission completion.

Flaw Sizing Detection by Pulse-Echo Ultrasonic Technique

2011 ◽  
Vol 55-57 ◽  
pp. 758-761
Author(s):  
Shiuh Chuan Her ◽  
Ming Chih Chang
Keyword(s):  
Longitudinal Wave ◽  
Incident Wave ◽  
Small Hole ◽  
Ultrasonic Technique ◽  
Evaluation Technique ◽  
Flaw Sizing ◽  
Non Destructive Evaluation ◽  
Incident Waves ◽  
Pulse Echo ◽  
Non Destructive

Ultrasonic is one of the most common uses of non-destructive evaluation technique. It could detect flaws inside the structure and on the surface such as voids, holes and cracks. In this investigation, a 304 steel block with a small hole inside the structure was fabricated. The radius of the hole was evaluated by the pulse-echo ultrasonic technique. In this work, 2.25MHz, 5MHz and 10MHz of incident waves were employed to detect the radius of the hole inside the structure. The errors of a hole with 2.5 mm radius measured by 5 MHz and 10MHz longitudinal wave were 1.15% and 6.6%, respectively. Experimental results showed that the accuracy of flaw sizing detection by ultrasonic technique depends on the frequency of the incident wave.

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