Investigation of residual stresses in microsystems using X-ray diffraction

Kämpfe, B.

doi:10.1016/s0921-5093(00)00869-8

Cited by 27 publications

(11 citation statements)

References 1 publication

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“…Zastosowano promieniowanie filtrowane serii CoKα (λ = 1,79026 Å). Naprężenia własne wyznaczono w oparciu o klasyczną metodę sin2ψ [5]. O wyborze danych refleksów dyfrakcyjnych dla przeprowadzenia pomiaru i analizy stanu naprężeń własnych decydowało położenie pików względem refleksów od materiału podłoża (Al2O3), na które nie mogły one zachodzić, szczególnie wobec braku znajomości tekstury krystalograficznej wykorzystanego Al2O3.…”

Section: Metoda Rentgenowska (X-ray)unclassified

Badania naprężeń własnych w powłokach metalowych natryskiwanych na podłoże ceramiki Al2O3

Golański

Kujawińska

Chmielewski

et al. 2015

Przegląd Spawalnictwa

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Section: Metoda Rentgenowska (X-ray)unclassified

Badania naprężeń własnych w powłokach metalowych natryskiwanych na podłoże ceramiki Al2O3

Golański

Kujawińska

Chmielewski

et al. 2015

Przegląd Spawalnictwa

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“…There are few studies on the dynamic mechanical properties and flow stress model construction at high temperature and high strain rate. Because the dynamic mechanical properties of the material are different from the static mechanical properties, only the dynamic mechanical properties can truly reflect the actual performance of the material deformation [20,21]. Therefore, this paper not only studies the dynamic mechanical properties of TC18 titanium alloy at high temperature and high strain rate, but also constructs JC constitutive model, which can predict the flow stress.…”

Section: Introductionmentioning

confidence: 99%

Study on Dynamic Mechanical Properties and Constitutive Model Construction of TC18 Titanium Alloy

Zhang

Wang

et al. 2019

Metals

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In order to investigate the static and dynamic mechanical properties of TC18 titanium alloy, the quasi-static stress–strain curve of TC18 titanium alloy under room temperature was obtained by DNS 100 electronic universal testing machine (Changchun Institute of Mechanical Science Co., Ltd., Changchun, China). Meanwhile, the flow stress–strain curves under different temperatures and strain rates are analyzed by split Hopkinson pressure bar (SHPB) device with synchronous assembly system. On the basis of the two experimental data, the JC constitutive model under the combined action of high temperature and impact load is established using the linear least squares method. The results show the following: the yield strength and flow stress of TC18 titanium alloy increase slowly with the increase of the strain rate, and the strain value corresponding to the yield strength is reduced. With the increase of strain, the flow stress increases at first and then decreases at different temperatures. The strain value corresponding to the transition point rises with the temperature increase, and the corresponding stress value remains basically unchanged. With the increase of experimental temperature, the flow stress shows a downward trend, and the JC constitutive model can predict the plastic flow stress well.

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“…There are several nondestructive techniques that are usually applied in engineering practice to evaluate structure stress, such as neutron-diffraction (ND) [4][5] , X-ray diffraction (XRD) [6][7] and ultrasonic testing (UT) [8][9] , etc. Comparing with other methods, the ultrasonic method is acknowledged to be one of the most potential non-destructive inspection methods in structural stress measurement filed for its fine sensitivity, veracity and good operation features.…”

Section: Introductionmentioning

confidence: 99%

Application of acoustoelasticity in studying compressive stress state in Polymer bonded explosive

Zhang

Zhou

et al. 2015

2015 IEEE Far East NDT New Technology &Amp; Application Forum (FENDT)

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The acoustoelastic technique is a nondestructive technique for analyzing the stress state in materials using ultrasonic waves. The velocities of the ultrasonic waves propagating through Polymer bonded explosive (PBX) change depending on the applied stress (compression or tension). In this paper, PBX specimens at close range of densities and ultrasonic wave velocities under similar initial conditions are applied in the compressive loading tests. Ultrasonic longitudinal wave propagation direction is parallel and perpendicular to applied stress direction respectively. Longitudinal wave velocities are accurately and efficiently achieved by real-time Ultrasonic time differences (velocity) measurement unit. In the range of stress evaluated under compression between 0 and 15MPa, these relations between the relative variation of the longitudinal wave velocity and the applied stress vary linearly. The value of acoustoelastic constant (K) can be determined by the compression tests. These founds suggest the potential of applying the acoustoelastic effect to determine the compressive stress condition of PBX in a certain stress range.

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Investigation of residual stresses in microsystems using X-ray diffraction

Cited by 27 publications

References 1 publication

Badania naprężeń własnych w powłokach metalowych natryskiwanych na podłoże ceramiki Al2O3

Badania naprężeń własnych w powłokach metalowych natryskiwanych na podłoże ceramiki Al2O3

Study on Dynamic Mechanical Properties and Constitutive Model Construction of TC18 Titanium Alloy

Application of acoustoelasticity in studying compressive stress state in Polymer bonded explosive

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