Title: Method for conducting in situ high-temperature digital image correlation with simultaneous synchrotron measurements under thermomechanical conditions

Journal Article · · Review of Scientific Instruments
DOI: https://doi.org/10.1063/1.5124496 · OSTI ID:1604143
ORCiD logo [1];  [1];  [1];  [2];  [3];  [4];  [2];  [3];  [4]; ORCiD logo [1]
  1. Univ. of Central Florida, Orlando, FL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  3. PSL Research Univ., Évry (France). MINES ParisTech
  4. Inst. of Materials Research, Köln (Germany). German Aerospace Center

This work presents a novel method of obtaining in situ strain measurements at high temperature by simultaneous digital image correlation (DIC), which provides the total strain on the specimen surface, and synchrotron x-ray diffraction (XRD), which provides lattice strains of crystalline materials. DIC at high temperature requires specialized techniques to overcome the effects of increased blackbody radiation that would otherwise overexpose the images. The technique presented herein is unique in that it can be used with a sample enclosed in an infrared heater, remotely and simultaneously with synchrotron XRD measurements. The heater included a window for camera access, and the light of the heater lamps is used as illumination. High-temperature paint is used to apply a random speckle pattern to the sample to allow the tracking of displacements and the calculation of the DIC strains. An inexpensive blue theatrical gel filter is used to block interfering visible and infrared light at high temperatures. This technique successfully produces properly exposed images at 870 °C and is expected to perform similarly at higher temperatures. The average strains measured by DIC were validated by an analytical calculation of the theoretical strain. Simultaneous DIC and XRD strain measurements of Inconel 718 (IN718) tensile test specimens were performed under thermal and mechanical loads and evaluated. Finally, this approach uses the fact that with DIC, the total strain is measured, including plastic strain, while with XRD, only elastic strain is captured. The observed differences were discussed with respect to the effective deformation mechanisms.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
German Science Foundation (DFG); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1604143
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 3 Vol. 91; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (32)

Noncontacting strain measurements at high temperatures by the digital laser speckle technique journal March 2000
High-temperature deformation measurements using digital-image correlation journal March 1996
Measurement of In Situ-Full-Field Strain Maps on Ceramic Matrix Composites at Elevated Temperature Using Digital Image Correlation journal December 2014
Ncorr: Open-Source 2D Digital Image Correlation Matlab Software journal March 2015
Determination of displacements using an improved digital correlation method journal August 1983
High-temperature delamination mechanisms of thermal barrier coatings: In-situ digital image correlation and finite element analyses journal April 2017
Fatigue crack growth under large scale yielding condition: The need of a characteristic length scale journal September 2017
The use of high energy X-rays from the Advanced Photon Source to study stresses in materials journal June 2005
Effect of heat treatment on the microstructure and mechanical properties of Inconel 718 processed by selective laser melting journal July 2015
Damage mapping with a degrading elastic modulus using piezospectroscopic coatings journal October 2015
High-temperature deformation field measurement by combining transient aerodynamic heating simulation system and reliability-guided digital image correlation journal September 2010
Measuring the thermal expansion coefficient of tubular steel specimens with digital image correlation techniques journal October 2010
Development of microscale pattern for digital image correlation up to 1400°C journal May 2015
Oxide and TBC spallation in β-NiAl coated systems under mechanical loading journal December 2008
Strain response of thermal barrier coatings captured under extreme engine environments through synchrotron X-ray diffraction journal July 2014
High-temperature materials testing with full-field strain measurement: Experimental design and practice journal November 2011
Synchrotron X-ray measurement techniques for thermal barrier coated cylindrical samples under thermal gradients journal August 2013
Ultraviolet digital image correlation (UV-DIC) for high temperature applications journal April 2014
Strain measurement of objects subjected to aerodynamic heating using digital image correlation: Experimental design and preliminary results journal November 2014
A methodology for high resolution digital image correlation in high temperature experiments journal March 2015
Two-dimensional digital image correlation for in-plane displacement and strain measurement: a review journal April 2009
High-temperature digital image correlation method for full-field deformation measurement at 1200 °C journal November 2010
High temperature displacement and strain measurement using a monochromatic light illuminated stereo digital image correlation system journal November 2012
A practical approach to optimizing the preparation of speckle patterns for digital-image correlation journal September 2014
Measurement of high temperature full-field strain up to 2000 °C using digital image correlation journal January 2017
Use of Full-Field Digital Image Correlation and Infrared Thermography Measurements for the Thermomechanical Analysis of Material Behaviour journal February 2010
Synchrotron X-Ray Diffraction Measurements Mapping Internal Strains of Thermal Barrier Coatings During Thermal Gradient Mechanical Fatigue Loading journal August 2015
High-temperature digital image correlation method for full-field deformation measurement captured with filters at 2600°C using spraying to form speckle patterns journal June 2014
High-temperature strain measurement using active imaging digital image correlation and infrared radiation heating journal September 2013
Introduction to the Characterization of Residual Stress by Neutron Diffraction book January 2005
High-temperature strain field measurement using digital image correlation journal March 2009
Capturing the Competing Influence of Thermal and Mechanical Loads on the Strain of Turbine Blade Coatings via High Energy X-rays journal September 2018

Similar Records

In situ strain and temperature measurement and modelling during arc welding
Journal Article · 2014 · Science and Technology of Welding and Joining · OSTI ID:1185830

X-Ray Stereo Digital Image Correlation
Journal Article · 2019 · Experimental Techniques · OSTI ID:1559523

Correcting for digital image correlation speckle inversion at high temperature using color cameras
Journal Article · 2022 · Applied Optics · OSTI ID:1887483

Related Subjects