Comparative study of residual stress measurement techniques with high spatial resolution

2009 ◽  
Author(s):  
Dietmar Vogel ◽  
Ingrid Maus ◽  
Florian Schindler-Saefkow ◽  
Bernd Michel
Keyword(s):  
Residual Stress ◽  
Comparative Study ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Stress Measurement ◽  
Measurement Techniques ◽  
Residual Stress Measurement

scholarly journals Residual Stress Measurement on a MEMS Structure With High-Spatial Resolution

2007 ◽  
Vol 16 (2) ◽  
pp. 365-372 ◽  
Author(s):  
Neus Sabate ◽  
Dietmar Vogel ◽  
Astrid Gollhardt ◽  
Jrgen Keller ◽  
Carles Cane ◽  
...  
Keyword(s):  
Residual Stress ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Stress Measurement ◽  
Residual Stress Measurement

Residual stress measurement techniques for Ti6Al4V parts fabricated using selective laser melting: state of the art review

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ruben B.O. Acevedo ◽  
Klaudia Kantarowska ◽  
Edson Costa Santos ◽  
Marcio C. Fredel
Keyword(s):  
Residual Stress ◽  
Selective Laser Melting ◽  
Stress Measurement ◽  
State Of The Art ◽  
Measurement Techniques ◽  
Residual Stress Measurement ◽  
Hole Drilling ◽  
X Ray Diffraction ◽  
Laser Melting ◽  
Content Type

Purpose This paper aims to generate a review of available techniques to measure Residual Stress (RS) in Ti6Al4V components made by Ti6Al4V. Design/methodology/approach State of the art; literature review in the field of Residual Stress measurement of Ti6Al4V parts made by selective laser melting (SLM). Findings Different Residual Stress measurement techniques were detailed, regarding its concept, advantages and limitations. Regarding all researched references, hole drilling (semi destructive) and X-ray diffraction (nondestructive) were the most cited techniques for Residual Stress measurement of Ti6Al4V parts made by SLM. Originality/value An extensive analysis of RS measurement techniques for Ti6Al4V parts made by SLM.

Effect of Gauge Volume on the Residual Stress Measurement Using Deep Hole Drilling Technique

2010 ◽  
Author(s):  
Amir H. Mahmoudi ◽  
David J. Smith ◽  
Chris E. Truman ◽  
Martyn J. Pavier
Keyword(s):  
Residual Stress ◽  
Material Removal ◽  
Stress Measurement ◽  
Measurement Techniques ◽  
Residual Stress Measurement ◽  
Hole Drilling ◽  
Deep Hole ◽  
Deep Hole Drilling ◽  
Gauge Volume ◽  
Drilling Technique

Accurate evaluation of residual stress is essential if is to be taken into account in structural integrity assessments. For thick components, many non-destructive residual stress measurement techniques cannot be used since they are unable to measure the stresses deep within the component. Measurement techniques which involve mechanical strain relief through material removal are the only alternative. Recently, it has been found that these techniques may fail to measure the stresses correctly when highly triaxial stresses are present because plastic redistribution can occur when the material removal is carried out. The Deep Hole Drilling technique is a very powerful method to measure the stresses within very thick engineering components. However, it can suffer from high levels of plasticity and lead to inaccurate results. It is shown in the present research that the effect of plasticity on the measured stresses can be eliminated. In the present work, the effect of gauge volume on the plasticity effect is investigated.

Calibration of the Ultrasonic Technique Using the Deep Hole Drilling, Neutron Diffraction and Contour Residual Stress Measurement on a Ring Stiffened Cylindrical Structures

2016 ◽  
Author(s):  
Xavier Ficquet ◽  
Remi Romac ◽  
Douglas Cave ◽  
Ed J. Kingston
Keyword(s):  
Residual Stress ◽  
Neutron Diffraction ◽  
Tensile Test ◽  
Stress Measurement ◽  
Measurement Techniques ◽  
Residual Stress Measurement ◽  
Hole Drilling ◽  
Deep Hole ◽  
Deep Hole Drilling ◽  
Cylindrical Structures

This paper presents the residual stress measurements carried out on a t-section representative of a ring stiffened cylindrical structures. This paper presents the work carried out to ascertain the residual stresses present within a T-plate section representative of a ring stiffened cylindrical structures. The contour, the deep hole drilling (DHD) and the neutron diffraction (ND) methods were applied to determine the longitudinal component of residual stress in the weld toe of the fillet weld in the as-welded condition. The results of these measurements are presented and compared to highlight agreements and discrepancies in the measured residual stress distributions using these different techniques. Finally, non-destructive residual stress measurement using the ultrasonic (US) technique was carried out on the component. The ultrasonic measurement provides a relative measurement and usually requires a tensile test in order to determine the acoustoelastic constant and the time of flight in a stress-free state. The tensile test requires some material to be extracted from the component. The tensile test can be avoided if other residual stress measurement techniques are used for the calibration. After the calibration the US technique can be deployed on a full-scale ring stiffened cylindrical structures to detect abnormal variation in the residual stress field.

A critical comparison between XRD and FIB residual stress measurement techniques in thin films

2014 ◽  
Vol 572 ◽  
pp. 224-231 ◽  
Author(s):  
E. Bemporad ◽  
M. Brisotto ◽  
L.E. Depero ◽  
M. Gelfi ◽  
A.M. Korsunsky ◽  
...  
Keyword(s):  
Thin Films ◽  
Residual Stress ◽  
Stress Measurement ◽  
Measurement Techniques ◽  
Residual Stress Measurement ◽  
Critical Comparison

AL7N01 Butt Joint Welding Residual Stress Measurement by Ultrasonic Method

2012 ◽  
Vol 468-471 ◽  
pp. 476-479
Author(s):  
Zi Qi Ma ◽  
Xue Song Liu ◽  
Yi Cheng ◽  
Liang Zhang ◽  
Jian Gang Shi ◽  
...  
Keyword(s):  
Residual Stress ◽  
Stress Field ◽  
Spatial Resolution ◽  
Stress Measurement ◽  
Ultrasonic Method ◽  
Differential Method ◽  
Welding Residual Stress ◽  
Residual Stress Measurement ◽  
Hole Drilling ◽  
Residual Stress Field

Analysis the shortage of ultrasonic stress measurement based on Lcr wave in low spatial resolution. Point out it is inapplicable in measuring gradient stress field like welding residual stress field. In this paper, propagation differential method is proposed to solve the low spatial resolution problem on Lcr wave stress measurement, and its theory is introduced. This method can raise the spatial resolution from tens of millimeter to a several millimeter level with out decline the stress resolution. A welding residual stress field of 7N01 aluminum alloy butted joint plate is measured by this method, and its result is compared with hole drilling method. Source of errors is discussed. It is seen that propagation differential method is applicable in welding residual stress measurement.

Assessment of Weld Residual Stress Measurement Precision: Mock-Up Design and Results for the Contour Method

2015 ◽  
Vol 1 (3) ◽  
Author(s):  
Mitchell D. Olson ◽  
Michael R. Hill ◽  
Eric Willis ◽  
Artie G. Peterson ◽  
Vipul I. Patel ◽  
...  
Keyword(s):  
Residual Stress ◽  
Stress Measurement ◽  
Measurement Techniques ◽  
Repeated Measurements ◽  
Residual Stress Measurement ◽  
Contour Method ◽  
Stress Profile ◽  
Residual Stress Profile ◽  
Stress Measurements ◽  
Reproducibility Study

Recent experimental work has shown residual stress measurements in welded material to be difficult. To better assess the precision of residual stress measurement techniques, a measurement article was designed to allow repeated measurements of a nominally identical stress field. The measurement article is a long 316L stainless steel plate containing a machine-controlled eight-pass slot weld. Measurements of weld direction residual stress made with the contour method found high tensile stress in the weld and heat-affected zone, with a maximum near 450 MPa and compressive stress away from the weld, a typical residual stress profile for constrained welds. The repeatability standard deviation of repeated contour method residual stress measurements was found to be less than 20 MPa at most spatial locations away from the boundaries of the plate. The repeatability data in the weld are consistent with those from a previous repeatability experiment using the contour method in quenched aluminum bars. A finite-element simulation and neutron diffraction measurements were performed for the same weld and provided results consistent with the contour method measurements. Much of the material used in the work remains available for use in assessing other residual stress measurement techniques, or for an interlaboratory reproducibility study of the contour method.

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