In-plane modulus testing of materials by an ultrasonic dry-contact method
US10620167B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2018 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Sep 3, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/105
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for performing nondestructive evaluation of a specimen comprises a first ultrasonic longitudinal wave transducer configured to be coupled to a first edge of a specimen to be tested; a second ultrasonic longitudinal wave transducer configured to be coupled to the first side of the specimen at a predetermined distance from the first ultrasonic shear wave transducer, wherein the first ultrasonic longitudinal wave transducer is configured to transmit a guided wave into the specimen, and the second ultrasonic longitudinal wave transducer is configured to receive the guided wave from the first ultrasonic longitudinal wave transducer. The first ultrasonic longitudinal wave transducer and the second ultrasonic longitudinal wave transducer are low frequency longitudinal transducers that are capable of operating at or below 0.5 MHz (500 KHz). A membrane may be used as the couplant between the transducers and the specimen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.