Ultrasonic measuring method
US4452082A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Apr 28, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0234
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring the physical characteristics of an object through the use of an ultrasonic wave, which comprises the steps of transmitting an ultrasonic pulse to the object, receiving a reflected wave from the object, analyzing the spectrum of a parameter representing the strength of the reflected wave and obtaining a center frequency of the spectrum to measure the physical characteristics of the object. The center frequency is used as a function of distance or time to obtain its differential or difference coefficient, or a computation similar to that for an X-ray computer tomography is carried out, thereby to obtaining an attenuation slope and other data to be used as the physical characteristics of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.