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Sparse arrays and image compounding techniques for non-destructive testing using guided acoustic waves
(2013-06-01)
Piezoelectric array transducers applications are becoming usual in the ultrasonic non-destructive testing area. However, the number of elements can increase the system complexity, due to the necessity of multichannel ...
Sparse arrays and image compounding techniques for non-destructive testing using guided acoustic waves
(2013-06-01)
Piezoelectric array transducers applications are becoming usual in the ultrasonic non-destructive testing area. However, the number of elements can increase the system complexity, due to the necessity of multichannel ...
Evaluation of the density distribution in MDF's using ultrasonic wave technique
(Ipef-inst Pesquisas Estudos FlorestaisPiracicabaBrasil, 2007)
Effects of ultrasonic irradiation on the spectrophotometric determination of nickel with dimethylglyoxime
(2001)
Influence of ultrasonic waves in the spectrophotometric determination of nickel with dimethylglyoxime (DMG) was investigated and interferences from foreign species such as Co2+, Fe2+ and Cu2+ were studied. A 1.5-fold ...
Influence of ultrasonic waves on phosphate determination by the molybdenum blue method
(2002)
Polymeric bonds between molybdate monomeric ions in acidic medium were broken by 40 kHz ultrasonic wave irradiation, improving the reaction kinetics with o-phosphate in the presence of ascorbic acid. It could be assumed ...
Anelastic relaxation due to OH pairs in NbZr alloys
(Elsevier B.V., 1994-09-01)
In the last 30 years several studies have been made to understand the relaxation mechanisms of the hydrogen atoms present in transition metals and their alloys. In this work, we observed the stress-induced ordering of ...