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Non-Destructive Inspection Approach Using Ultrasound to Identify the Material State for Amorphous and Semi-Crystalline Materials

Journal Article · · AIP Conference Proceedings
DOI:https://doi.org/10.1063/1.5031617· OSTI ID:1429655
 [1];  [1];  [2]
  1. Baylor Univ., Waco, TX (United States). Department of Mechanical Engineering
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

At present, there are many methods to identify the temperature and phase of a material using invasive techniques. However, most current methods require physical contact or implicit methods utilizing light reflectance of the specimen. In this paper, we present a nondestructive inspection method using ultrasonic wave technology that circumvents these disadvantages to identify phase change regions and infer the temperature state of a material. In the present study an experiment is performed to monitor the time of flight within a wax as it undergoes melting and the subsequent cooling. Results presented in this work show a clear relationship between a material’s speed of sound and its temperature. The phase change transition of the material is clear from the time of flight results, and in the case of the investigated material, this change in the material state occurs over a range of temperatures. The range of temperatures over which the wax material melts is readily identified by speed of sound represented as a function of material temperature. The melt temperature, obtained acoustically, is validated using Differential Scanning Calorimetry (DSC), which uses shifts in heat flow rates to identify phase transition temperature ranges. Lastly, the investigated ultrasonic NDE method has direct applications in many industries, including oil and gas, food and beverage, and polymer composites, in addition to many implications for future capabilities of nondestructive inspection of multi-phase materials.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
1429655
Report Number(s):
SAND--2017-11254J; 657885
Journal Information:
AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Vol. 1949; ISSN 0094-243X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (12)

Ultrasonic Monitoring of Beef Temperature During Roasting journal November 2000
Fundamentals of Ultrasonic Nondestructive Evaluation book January 1998
In Situ Ultrasonic Characterization of Cocoa Butter Using a Chirp journal February 2014
Monitoring Tempered Dark Chocolate Using Ultrasonic Spectrometry journal June 2016
Noncontact measurement of internal temperature distribution in a solid material using ultrasonic computed tomography journal May 2001
A method for two-dimensional temperature field distribution reconstruction journal January 2017
Ultrasonic computerized tomography (CT) for temperature measurements with limited projection data based on extrapolated filtered back projection (FBP) method journal February 2005
Thermal measurements using ultrasonic acoustical pyrometry journal April 2014
Noninvasive Ultrasound Measurements of Temperature Distribution and Heat Fluxes in Solids journal December 2015
An acoustic pyrometer system for tomographic thermal imaging in power plant boilers journal January 1996
Ultrasonic Monitoring of Internal Temperature Distribution in a Heated Material journal May 2008
In line melt temperature measurement during real time ultrasound monitoring of single screw extrusion journal January 2000

Figures / Tables (10)


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