scholarly journals Report on "The 51th Workshop on X-ray Studies on Mechanical Behavior of Materials - Front Line of Non-destructive Evaluation-"

2015 ◽  
Vol 64 (4) ◽  
pp. 337
Author(s):  
Koji YATSUSHIRO ◽  
Takayuki KURIMURA
Keyword(s):  
Mechanical Behavior ◽  
Front Line ◽  
X Ray ◽  
Non Destructive Evaluation ◽  
Non Destructive

scholarly journals Non-destructive Evaluation of Friction Stir Welded Joints by X-ray Radiography and Infrared Thermography

2014 ◽  
Vol 86 ◽  
pp. 469-475 ◽  
Author(s):  
T. Saravanan ◽  
B.B. Lahiri ◽  
K. Arunmuthu ◽  
S. Bagavathiappan ◽  
A.S. Sekhar ◽  
...  
Keyword(s):  
Infrared Thermography ◽  
Welded Joints ◽  
X Ray ◽  
Friction Stir ◽  
Non Destructive Evaluation ◽  
Non Destructive

Non-Destructive Evaluation of Strains and Voiding in Passgvated Copper Metallizations

1993 ◽  
Vol 308 ◽  
Author(s):  
Richard P. Vinci ◽  
Thomas N. Marieb ◽  
John C. Bravman
Keyword(s):  
Thermal Cycle ◽  
Strain State ◽  
Hydrostatic Stress ◽  
Strain Analysis ◽  
X Ray ◽  
Non Destructive Evaluation ◽  
State Determination ◽  
Non Destructive ◽  
Voltage Scanning

ABSTRACTStress induced voiding in passivated Cu lines was investigated by x-ray strain analysis and in-situ high voltage scanning electron microscope (HVSEM) techniques. Cu lines on a Ta underlayer and Cu lines on an Al underlayer were patterned by a trilayer liftoff technique and passivated with Si3N4. For direct observation of stress voiding, specimens were heated to 350ºC in the HVSEM and then cooled and held at 150ºC. Identical samples were subjected to the same thermal cycle for strain state determination using x-ray techniques. The hydrostatic stress state at each temperature was calculated from the measured strains. Few initial voids were observed after passivation in either sample. After heating to 350ºC and cooling to the dwell temperature, no new voiding was seen in the Ta/Cu lines. Measured hydrostatic strains were half those measured in the Al/Cu lines. Heavy voiding was observed in the Al/Cu lines after cooling to the dwell temperature.

X-Rays for Fluid Flow Inspection

2004 ◽  
Author(s):  
D. Chambellan ◽  
O. Gal ◽  
S. Legoupil ◽  
A. Vabre
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Specific Gravity ◽  
Void Fraction ◽  
X Rays ◽  
Optical Technique ◽  
X Ray ◽  
Non Destructive Evaluation ◽  
Intensive Use ◽  
Non Destructive

X-rays techniques are widely used in the non-destructive evaluation field for mechanical inspection. However, development of new x-ray detectors and sources over the last decade has let to an intensive use of this technique in other fields. In this paper, we describe the use of X-rays techniques in the field of fluid flow engineering (fluidics and heat transfer). This technique is very attractive since measurements can be performed even if pressure, temperature require the use of opaque walls. In addition the X-ray technique is well suited to multiphase flows where optical technique can not be used if void fraction is larger than few percents. Specific gravity, mass or void fraction are the main accessible parameters.

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