EP 0341244 A4 19910410 - NONDESTRUCTIVE MEASUREMENT OF COMPOSITE MATERIALS
Title (en)
NONDESTRUCTIVE MEASUREMENT OF COMPOSITE MATERIALS
Publication
Application
Priority
US 8702914 W 19871110
Abstract (en)
[origin: WO8904524A1] An apparatus (110) for performing ultrasonic measurements of compliant material specimens (18) includes a pair of facing (114, 116) but spaced apart ultrasonic transducers between which the specimen (18) is placed, and which transmits signals (114) into the specimen and receives signals (116) from the specimen, a structure (124) which presses the transducers against the opposite surfaces of the specimen with a reproducibly controllable force so that the same compressive force may be applied for successive measurements, a gauge (125) that measures the separation of the two transducers, and a controller (122) which drives the transmitting transducer and receives the signals from the receiving transducer. Using this apparatus, the weight fractions of the phases of a composite material working specimen are determined nondestructively by first performing a sufficient number of nondestructive and destructive calibration measurements on the properties of calibration specimens. The information learned from the calibration specimens is used in combination with similar nondestructive measurements of the working specimen to determine the fractions of the phases therein, without damaging the working specimen.
IPC 1-7
IPC 8 full level
G01N 29/00 (2006.01); G01N 29/07 (2006.01); G01N 29/32 (2006.01)
CPC (source: EP)
G01N 29/07 (2013.01); G01N 29/323 (2013.01); G01N 2291/0231 (2013.01); G01N 2291/0251 (2013.01); G01N 2291/0258 (2013.01); G01N 2291/02827 (2013.01); G01N 2291/102 (2013.01)
Citation (search report)
- No further relevant documents have been disclosed.
- See references of WO 8904524A1
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 8904524 A1 19890518; AU 620023 B2 19920213; AU 8277687 A 19890601; EP 0341244 A1 19891115; EP 0341244 A4 19910410; JP H02502669 A 19900823
DOCDB simple family (application)
US 8702914 W 19871110; AU 8277687 A 19871110; EP 87907889 A 19871110; JP 50016687 A 19871110