| 1. |
COMPARISON OF DIFFERENT SIGNAL AVERAGING METHODS TO IMPROVE THE SNR FOR THE NDT OF COARSE GRAINED MATERIALS NONDESTRUCTIVE TESTING COMMUNICATIONS |
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Nondestructive Testing Communications,
Volume 1,
Issue 1,
1983,
Page 1-8
GUNTER SCHAFER,
VOLKER SCHMITZ,
WOLFGANG MULLER,
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摘要:
Four different signal-averaging methods for NDT of coarse grained materials based on the concept of synthetic aperture radar data processing are compared. Experiments with 1.8 MHz vertical longitudinal wave and 45° shear wave insoni-fication demonstrate that, the spatial RF-averaging with TOF-correction is the most powerful one.
ISSN:0278-0895
DOI:10.1080/10589758308952883
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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| 2. |
RADIOGRAPHIC EVALUATION 0F FBTR FUEL PIN END PLUG WELDS: USE OP DEFECT STANDARD AND MICRODENSITOMETRY |
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Nondestructive Testing Communications,
Volume 1,
Issue 1,
1983,
Page 9-17
J.K. GHOSH,
J.P. PANAKKAL,
P.R. ROY,
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摘要:
The inspection of Fast Breeder Test Reactor ( PBTR) fuel pin end plug welds by X-ray radiography presents certain problems in detecting extremely small defects in the weld zone because of the special geometry of the components. The use of a defect standard in addition to the conventional image quality indicators has been explored. Characterisation of the radiographs of standard defects and evaluation of typical defects from weld radiographs have been carried out using a scanning microdensitometer.
ISSN:0278-0895
DOI:10.1080/10589758308952884
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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| 3. |
NUMERICAL SMOOTHING OF ULTRASONIC BACKSCATTERED SIGNALS BY CONVOLUTION |
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Nondestructive Testing Communications,
Volume 1,
Issue 1,
1983,
Page 19-25
H.J. PONGRATZ,
H. WILLEMS,
W. ARNOLD,
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摘要:
We determine the attenuation constant of a single ultrasonic backscattered curve by convolution of the back-scattered signal with a gaussian of width D closely related to the structure of the interference pattern superimposed. The interference pattern is caused by incomplete phase cancellation of the scattered waves at the ensemble of polycrystals.
ISSN:0278-0895
DOI:10.1080/10589758308952885
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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| 4. |
FALSE INDICATIONS IN ULTRASONIC INSPECTION OF AUSTENITIC STAINLESS STEEL WELDMENTS |
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Nondestructive Testing Communications,
Volume 1,
Issue 1,
1983,
Page 27-34
PLATON KAPEANOS,
VICTOR WHITTAKER,
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摘要:
The metallurgical structure of austenitic weldments interacts in a complex manner with ultrasonic waves, resulting in ambiguity when interpreting reflections and at times in misinterpretation of defect positions. In this work, a technique is outlined which is used to demonstrate the existence of "false" indications, and suggestions are made into their nature.
ISSN:0278-0895
DOI:10.1080/10589758308952886
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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| 5. |
A review of “ INDUSTRIAL RADIOLOGY - THEORY AND PRACTICE, R. Halmshaw, Applied Science Publishers, 1982, 6” x 9”, xii + 392 pages, 116 illus., £ 32.00. |
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Nondestructive Testing Communications,
Volume 1,
Issue 1,
1983,
Page 35-36
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ISSN:0278-0895
DOI:10.1080/10589758308952887
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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| 6. |
Editorial |
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Nondestructive Testing Communications,
Volume 1,
Issue 1,
1983,
Page -
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PDF (15KB)
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ISSN:0278-0895
DOI:10.1080/10589758308952882
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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