| Nondestructive Tests of Elements Manufactured Using Diffusion Bonding and Superplastic Forming |
88 |
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| Authors:
V. Cortes; C. Valdecantos; B. Sainz; J. M. Bernardo; CONSTRUCCIONES AERONAUTICAS S A MADRID (SPAIN)*
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 | A nondestructive inspection method was investigated on a structural aircraft component made of Ti-6Al-4V. Typical expected defects and detectability are discussed. It is shown that the immersion method with reflector is less conditioned by the specimen geometry and does not require a large resolution. Results obtained on a welded piece of 2 mm width are included. It is shown that the method can detect 100% of the macrodefects above a ... |
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| LOW FREQUENCY EDDY CURRENT DETECTION AND EVALUATION OF CORROSION IN AIRCRAFT SKINS |
SEP 87 |
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| Authors:
J. M. Bernardo; B. Sainz; C. Valdecantos; V. Cortes
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| applicability of low frequency eddy current tests for the detection and evaluation of corrosion on aircraft fuselage skins is evaluated. experiments carried out on laboratory samples 1.8 mm thick chemically milled to simulate corrosion, show that results are quite good when only one sheet is involved and frequencies between 4 and 10 khz are applied. but when corrosion is under doubler areas the separation between skin and doubler is a ... |
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| ULTRASONIC INSPECTION OF ADVANCED CFRP STRUCTURES BY COMPUTER- CONTROLLED, PULSE-ECHO TECHNIQUE |
SEP 87 |
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| Authors:
B. Sainz; V. Cortes; C. Valdecantos; J. M. Bernardo
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| a portable unit to be applied in automatic inspection of advanced cfrp structures has been developed in our laboratories. the primary goal is to assist in artificial defect monitoring along the fatigue test of a complex component. main features of the system are: 1) pulse echo, water squirter operation, 2) portable frame for x-y scanning, 3) max. area of scan 600 mm (x); 400 mm (y), 4) 500 mm/sec max. ... |
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| ULTRASONIC INSPECTION OF ADVANCED CFRP STRUCTURES BY COMPUTER- CONTROLLED, PULSE-ECHO TECHNIQUE |
87 |
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| Authors:
B. Sainz; V. Cortes; C. Valdecantos; J. M. Bernardo
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| a portable unit to be applied in automatic inspection of advanced cfrp structures was developed to assist in artificial defect monitoring along the fatigue test of a complex component. main features of the system are: pulse echo, water squirter operation; portable frame for x-y scanning; maximum area of scan 600 mm (x), 400 (y); 500 mm/sec maximum scanning speed in x direction; data of amplitude and time of flight capture ... |
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| Defects and Materials Characterization by Analysis of Ultrasonic Signals. Study of a Technique to Measure Ultrasonic Attenuation |
MAY 85 |
68 pages |
| Authors:
C. Valdecantos; J. Miguel; INSTITUTO NACIONAL DE TECNICA AEROESPACIAL MADRID (SPAIN)
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 | The objective of this work is to explore the actual possibilities of a Nondestructive testing (NDT) technique to be applied in laboratory conditions, as a first stage, in order to make measurements of mechanical and elastic parameters on metals. Classic test of measurement of acoustic velocity and attenuation is useful to compute Young modulus or Poisson ratio, but these parameters have no wide technological usefulness. Much more interesting are others ... |
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| Defects and Materials Characterization by Analysis of Ultrasonic Signals |
30 OCT 1983 |
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| Authors:
C. Valdecantos; INSTITUTO NACIONAL DE TECNICA AEROESPACIAL MADRID (SPAIN)
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| Recent techniques in defects and materials characterization are reviewed and some of them selected to be implemented at INTA's Ultrasonic Lab. Previous work includes design and manufacture of several items (ultrasonic test bed, facsimile recorder) as well as familiarization with instrumentation. Main effort in this first year has been devoted to prepare software and to test it via elementary experiments on materials characterization. (Author) |
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