Development and Characterization of Ultrasonic transducers for High Temperature Contact Measurement
Creators
- 1. Korea Research Institute of Standards and Science, Daejeon (Korea, Republic of)
- 2. HAGISONIC Co., Daejeon (Korea, Republic of)
Description
Piezoelectric ultrasonic transducers for high temperature contact measurement were developed. These high temperature ultrasonic transducers (HTUT) consisted of bismuth titanate piezoceramic element whose Curie temperature is higher than 600 .deg. C, a backing material of the mixture of tungsten powder and inorganic binder, an inner alumina tube, a wear Plate and a housing. The operational frequencies or the HTUT were 1.04 and 2.08 MHz, respectively. Various commercially available couplants for high temperature were evaluated and compared. As a couplant for high temperature ultrasonic testing between HTUT and test specimen, gold epoxy was selected. The peak amplitude of pulse-echo signals from steel test specimen decreased with increasing temperature. The operational temperature of the HTUT reached up to 500 .deg. C at which the continuous contact measurement was possible
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Society for Nondestructive Testing
- Journal Volume
- 23
- Journal Issue
- 1
- Series
- 9 refs, 8 figs, 2 tabs
- Journal Page Range
- p. 14-20
- ISSN
- 1225-7842
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 42048848
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CURIE POINT; SIGNALS; TEMPERATURE RANGE 0400-1000 K; TRANSDUCERS; TUNGSTEN
- Descriptors DEC
- ELEMENTS; METALS; PHYSICAL PROPERTIES; REFRACTORY METALS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS; TRANSITION TEMPERATURE