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STRUCTURAL FLAW [2 records]
Record 1 - internal organization data 2002-11-18
Record 1, English
Record 1, Subject field(s)
- Engineering Tests and Reliability
- Space Centres
Record 1, Main entry term, English
- acoustic impact technique
1, record 1, English, acoustic%20impact%20technique
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The present work aims at trying out Acoustic Impact Technique as a possible means of deployment at field level for the purpose of flaw detection in composite helicopter blades. The principle underlying Acoustic Impact Testing is simple. The sound produced when a structure is tapped is mainly at the frequencies of major structural modes of vibration, which are structural properties. Any difference in the sound is necessarily due to modification affected to the force input by the defect in the structure. A study of the force time history of response or its fast fourier transform makes it possible to locate and detect sub surface flaws. 3, record 1, English, - acoustic%20impact%20technique
Record number: 1, Textual support number: 1 OBS
Type of non-destructive material testing. 4, record 1, English, - acoustic%20impact%20technique
Record 1, French
Record 1, Domaine(s)
- Fiabilité, contrôle et essais (Ingénierie)
- Centres spatiaux
Record 1, Main entry term, French
- technique du choc acoustique
1, record 1, French, technique%20du%20choc%20acoustique
feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
Essai non destructif de matériel astronautique. 2, record 1, French, - technique%20du%20choc%20acoustique
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1976-06-19
Record 2, English
Record 2, Subject field(s)
- Engineering Tests and Reliability
Record 2, Main entry term, English
- structural flaw 1, record 2, English, structural%20flaw
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record 2, French
Record 2, Domaine(s)
- Fiabilité, contrôle et essais (Ingénierie)
Record 2, Main entry term, French
- défaut de structure
1, record 2, French, d%C3%A9faut%20de%20structure
masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
structure : Manière dont les parties d'un tout quelconque sont arrangées 1, record 2, French, - d%C3%A9faut%20de%20structure
Record 2, Spanish
Record 2, Textual support, Spanish
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