A screening technique for anticipating network instabilities in AC-DC systems using sequence impedances obtained by frequency scanning

Author(s):  
M.K. Das ◽  
A.M. Gole ◽  
A.M. Kulkarni
Author(s):  
Thomas M. Moore

In the last decade, a variety of characterization techniques based on acoustic phenomena have come into widespread use. Characteristics of matter waves such as their ability to penetrate optically opaque solids and produce image contrast based on acoustic impedance differences have made these techniques attractive to semiconductor and integrated circuit (IC) packaging researchers.These techniques can be divided into two groups. The first group includes techniques primarily applied to IC package inspection which take advantage of the ability of ultrasound to penetrate deeply and nondestructively through optically opaque solids. C-mode Acoustic Microscopy (C-AM) is a recently developed hybrid technique which combines the narrow-band pulse-echo piezotransducers of conventional C-scan recording with the precision scanning and sophisticated signal analysis capabilities normally associated with the high frequency Scanning Acoustic Microscope (SAM). A single piezotransducer is scanned over the sample and both transmits acoustic pulses into the sample and receives acoustic echo signals from the sample.


2017 ◽  
Vol 137 (9) ◽  
pp. 272-277
Author(s):  
Takahito Tsukada ◽  
Yuki Hasegawa ◽  
Hidekazu Uchida
Keyword(s):  

2020 ◽  
Vol 53 (1) ◽  
Author(s):  
Asma Asma ◽  
Iqbal Hussain ◽  
Muhammad Yasin Ashraf ◽  
Muhammad Arslan Ashraf ◽  
Rizwan Rasheed ◽  
...  

Crop Science ◽  
1987 ◽  
Vol 27 (3) ◽  
pp. 598-600 ◽  
Author(s):  
G. K. Rufener ◽  
R. B. Hammond ◽  
R. L. Cooper ◽  
S. K. St. Martin

1993 ◽  
Vol 7 (10) ◽  
pp. 745-748 ◽  
Author(s):  
K. G. Hanson ◽  
Jitendra D. Desai ◽  
Anjana J. Desai

2000 ◽  
Vol 7 (1) ◽  
pp. 31-35 ◽  
Author(s):  
J. A. Hanson ◽  
C. C. Blackmore ◽  
F. A. Mann ◽  
A. J. Wilson

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