The Angara-2 acoustic-emission apparatus for determination of the hydrogen content in melted aluminum cast alloys

2007 ◽  
Vol 43 (1) ◽  
pp. 39-42 ◽  
Author(s):  
V. B. Vorontsov ◽  
A. V. Gorchinskii ◽  
A. N. Yanchenko ◽  
M. G. Ardashov
Keyword(s):  
Acoustic Emission ◽  
Hydrogen Content ◽  
Aluminum Cast Alloys ◽  
Cast Alloys

scholarly journals Automatic Determination of Secondary Dendrite Arm Spacing in AlSi-Cast Microstructures

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2827
Author(s):  
Christian Gawert ◽  
Rüdiger Bähr
Keyword(s):  
Computation Time ◽  
Automatic Measurement ◽  
Secondary Dendrite Arm Spacing ◽  
Dendrite Arm Spacing ◽  
Aluminum Cast Alloys ◽  
Cast Alloys ◽  
The Individual ◽  
Good Agreement

A new procedure for the automatic measurement of the secondary dendrite arm spacing (SDAS) from microscopic images is presented. The individual primary and secondary dendrite arms are identified through suitable segmentation techniques and clustered in such a way that dendritic structures are obtained suitable for SDAS measurement. The algorithms are applied to two different hypoeutectic aluminum cast alloys, and the quality of the measurements obtained is assessed through a comparison to manually measured SDAS values. A good agreement between the automated measurements and the distribution of manual measurements is found for both cast structures considered. In addition, a decrease in computation time is observed which allows for an increase in measurement density that is used to characterize the microstructures.

Determination of the hydrogen content in an evaporated Pd film by neutron interferometry

1995 ◽  
Vol 78 (4) ◽  
pp. 2398-2402 ◽  
Author(s):  
Seiji Tasaki ◽  
Takeshi Kawai ◽  
Toru Ebisawa
Keyword(s):  
Hydrogen Content ◽  
Neutron Interferometry

Optimization of a Specimen Size for the Determination of the Diffusible Hydrogen Content in Metals

2014 ◽  
Vol 698 ◽  
pp. 466-471
Author(s):  
Oleg V. Panchenko ◽  
Alexey M. Levchenko ◽  
Victor A. Karkhin
Keyword(s):  
Hydrogen Content ◽  
Calculation Method ◽  
Specimen Size ◽  
Experimental Results ◽  
Diffusible Hydrogen ◽  
Measuring Methods ◽  
Deposited Metal ◽  
Calculation Results

Specimens of various sizes are used to determine hydrogen content in deposited metals in such standards as ISO 3690, AWS A 4.3, and GOST 23338 while measuring methods are the same. It causes problems in comparison of experimental results and brings up the following question: what kind of specimen size is optimal to determine hydrogen content? An optimal specimen size was estimated using a calculation method. Experimental and calculation results obtained by using specimens with estimated dimensions were compared to the results obtained by using the specimen with dimensions of 100*25*8 mm to determine hydrogen content in a deposited metal.

Determination of Initial Crack Strength of Silicon Die Using Acoustic Emission Technique

2015 ◽  
Vol 44 (7) ◽  
pp. 2497-2506 ◽  
Author(s):  
Pei-Chi Chen ◽  
Yen-Fu Su ◽  
Shin-Yueh Yang ◽  
Steven Y. Liang ◽  
Kuo-Ning Chiang
Keyword(s):  
Acoustic Emission ◽  
Initial Crack ◽  
Acoustic Emission Technique
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