Measurement of creep-induced localized residual stress in soda-lime glass using nano-indentation technique

Widjaja, Sujanto; Yip, T.H.; Limarga, Andi M.

doi:10.1016/s0921-5093(01)01301-6

Cited by 13 publications

(7 citation statements)

References 7 publications

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“…Several authors proposed refinements to Equation (1) [17][18][19] derived from a combination of empirical tests and dimensional analysis. All these expressions account for the residual stress, the plastic dissipation inside the material, and the nature of cracks.…”

Section: Introductionmentioning

confidence: 99%

A Novel Methods for Fracture Toughness Evaluation of Tool Steels with Post-Tempering Cryogenic Treatment

Sola

Giovanardi

Parigi³

et al. 2017

Metals

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Cryogenic treatments are usually carried out immediately after quenching, but their use can be extended to post tempering in order to improve their fracture toughness. This research paper focuses on the influence of post-tempering cryogenic treatment on the microstructure and mechanical properties of tempered AISI M2, AISI D2, and X105CrCoMo18 steels. The aforementioned steels have been analysed after tempering and tempering + cryogenic treatment with scanning electron microscopy, X-ray diffraction for residual stress measurements, and micro-and nano-indentation to determine Young's modulus and plasticity factor measurement. Besides the improvement of toughness, a further aim of the present work is the investigation of the pertinence of a novel technique for characterizing the fracture toughness via scratch experiments on cryogenically-treated steels. Results show that the application of post-tempering cryogenic treatment on AISI M2, AISI D2, and X105CrCoMo18 steels induce precipitation of fine and homogeneously dispersed sub-micrometric carbides which do not alter hardness and Young's modulus values, but reduce residual stresses and increase fracture toughness. Finally, scratch test proved to be an alternative simple technique to determine the fracture toughness of cryogenically treated steels.

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Section: Introductionmentioning

confidence: 99%

A Novel Methods for Fracture Toughness Evaluation of Tool Steels with Post-Tempering Cryogenic Treatment

Sola

Giovanardi

Parigi³

et al. 2017

Metals

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show abstract

“…Several refinements to Eq. (1) have been proposed, [2][3][4] taking into account the nature of the cracks, the residual stresses, and the plastic dissipation inside the material. All these expressions were derived from a combination of dimensional analysis and empirical observations, but they are not supported by a closed-form analytical model.…”

Section: Introductionmentioning

confidence: 99%

Experimental determination of the fracture toughness via microscratch tests: Application to polymers, ceramics, and metals

Akono

Randall

Ulm³

2012

J. Mater. Res.

134

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The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters.This article presents a novel microscratch technique for the determination of the fracture toughness of materials from scratch data. While acoustic emission and optical imaging devices provide quantitative evidence of fracture processes during scratch tests, the technique proposed here provides a quantitative means to assess the fracture toughness from the recorded forces and depth of penetration. We apply the proposed method to a large range of materials, from soft (polymers) to hard (metal), spanning fracture toughness values over more than two orders of magnitude. The fracture toughness values so obtained are in excellent agreement with toughness values obtained for the same materials by conventional fracture tests. The fact that the proposed microscratch technique is highly reproducible, almost nondestructive, and requires only small material volumes makes this technique a powerful tool for the assessment of fracture properties for microscale materials science and engineering applications.

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“…Widjaja et al. [3] used a contact‐creep procedure to induce the residual stress in a 2.0 mm × 2.6 mm rectangular area on a soda lime glass, which was annealed and furnace cooled to relieve any pre‐existing residual stress. Then, using Nano Indenter II system equipped with Berkovitch indenter to make indents on the samples, the data for the crack length of the indents were measured to calculate the residual stress.…”

Section: Introductionmentioning

confidence: 99%

Measuring the 2D Residual Surface Stress Mapping in Tempered Glass under the Cooling Jets: the Influence of Process Parameters on the Stress Homogeneity and Isotropy

Chen

Lochegnies

Defontaine

et al. 2012

Strain

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In glass products, thermally tempered on industrial lines for automotive and architectural industries, the distribution of residual stress is highly inhomogeneous and, in certain situations, can produce optical defects that are more visible in sunlight because of the impact of the cooling jets on the hot glass during the tempering process. To analyse the influence of the process parameters on stress inhomogeneity, flat square glass samples were tempered with PRELCO tempering production unit without oscillation and with oscillation under cooling jets, thus reproducing the current industrial practice for the latter. To measure the residual stress distributions in the tempered glass samples, we developed a fully automatic system that combines the scattered light polariscope (SCALP) and a four‐axis machine, with three linear axes and one rotational one. Using the SCALP manually with the dedicated software makes it possible to access the glass surface at the laser beam’s entering point. With a four‐axis Computer Numerical Control (CNC) machine, we determined the 2D residual stress distribution under the cooling jets and analysed the influence of the cooling rate and oscillation on the homogeneity and the isotropy of the residual surface stress in the tempered glass samples.

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Measurement of creep-induced localized residual stress in soda-lime glass using nano-indentation technique

Cited by 13 publications

References 7 publications

A Novel Methods for Fracture Toughness Evaluation of Tool Steels with Post-Tempering Cryogenic Treatment

A Novel Methods for Fracture Toughness Evaluation of Tool Steels with Post-Tempering Cryogenic Treatment

Experimental determination of the fracture toughness via microscratch tests: Application to polymers, ceramics, and metals

Measuring the 2D Residual Surface Stress Mapping in Tempered Glass under the Cooling Jets: the Influence of Process Parameters on the Stress Homogeneity and Isotropy

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