Effect of scratches on the damage characteristics of fused silica optics under extremely-high impact load

Cheng, Jian; Yang, Zican; Wang, Chen; Zhao, Linjie; Chen, Mingjun; Wang, Jinghe; Li, Yaguo; Xu, Qiao; Liu, Zhichao; Xu, Huining

doi:10.1016/j.ijmecsci.2022.107099

Cited by 23 publications

(1 citation statement)

References 60 publications

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“…Since the mechanical properties of many materials change under the influence of strain rate, obtaining the dynamic properties of the material is typically necessary before delving into the study of fracture mechanisms [4]. Grady and Lipkin [5] investigated the relationship between fracture strength and strain rate in different rocks and found that the fracture strength of most rock materials follows a power-law relationship with strain rate, with the exponent mostly being 1/3.…”

Section: Introductionmentioning

confidence: 99%

The analysis and simulation of fracture behavior of fused quartz under dynamic loading

Duan,

Zhao,

Zhou

et al. 2024

J. Phys.: Conf. Ser.

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Fused quartz is widely utilized across various industries due to its superior performance. However, its brittleness often leads to fracture occurrences under variable external loads during processing or usage, making the investigation of its dynamic mechanical properties and fracture mechanisms crucial. In this study, the fracture strength variations of fused quartz under different loading rates were obtained through strength experiments. It was observed that when the velocity is below 2 mm/min, the loading rate has little influence on fracture strength. And when the velocity exceeds 2 mm/min, fracture strength rises with the increase in velocity. According to the fitted fracture strength-strain rate curve, a modified peridynamic failure criterion was developed to simulate the fracture process under different loading speeds. The simulated fracture morphology closely matched experimental results and the error in fracture load values is less than 8%. It validates the accuracy of the simulation. Additionally, it was found that the displacement values at the moment of fracture under different loading rates were relatively similar. It indicated that higher speeds result in greater loading energy, thus leading to the generation of more cracks and fragments. This study provides theoretical support and reference for understanding the fracture behavior of fused quartz.

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Section: Introductionmentioning

confidence: 99%

The analysis and simulation of fracture behavior of fused quartz under dynamic loading

Duan,

Zhao,

Zhou

et al. 2024

J. Phys.: Conf. Ser.

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Grinding heat theory based on trochoid scratch model: establishment and verification of grinding heat model of trochoid cross-point

Zhao,

Lin,

Zhou

et al. 2024

Int J Adv Manuf Technol

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Grinding is an ultra-precision machining technology. The grinding force and grinding heat emerge as pivotal physical parameters. Excessive grinding temperature can engender unwarranted thermal damage to the processed material. In cup grinding wheel face grinding, employing a singular abrasive grain discrete heat source method enables a more precise establishment of the face grinding temperature field. Cross tracks of abrasive exist widely in cup grinding wheel, and the influence of cross point temperature should be considered in order to accurately establish the grinding temperature field model. Thus, a single-grain discrete point heat source superposition temperature field analytical model was established. Through trochoid feed scratch experiments, the variation law of thermal effect of cross points under different cutting depth is verified. The experimental findings reveal conspicuous changes in cutting force and cutting heat at the entry and exit positions of the scratch intersection region. Moreover, the abrasive grain scratch sustains more severe damage compared to other regions. The energy change caused by the impact effect is the key factor leading to the temperature change at the intersection. The energy lost at the entrance of the intersection position is close to the energy of the impact effect. With the increase of the cutting depth, the ratio of the two tends to converge towards 1, ranging from 0.868 to 0.932 to 0.965. The error between the theoretical model and experimental verification is less than 5%, indicating the singleparticle discrete heat source superposition temperature field model can well characterize the grinding surface temperature field caused by crosspoint effect, which lays a foundation for the grinding heat theory based on trochoid model.

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Effect of Impact Angle and Speed, and Weight Abrasive Concentration on AISI 1015 and 304 Steel Exposed to Erosive Wear

Gul,

Demirsöz,

Kabave Kilincarslan

et al. 2024

J. of Materi Eng and Perform

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Effect of scratches on the damage characteristics of fused silica optics under extremely-high impact load

Cited by 23 publications

References 60 publications

The analysis and simulation of fracture behavior of fused quartz under dynamic loading

The analysis and simulation of fracture behavior of fused quartz under dynamic loading

Grinding heat theory based on trochoid scratch model: establishment and verification of grinding heat model of trochoid cross-point

Effect of Impact Angle and Speed, and Weight Abrasive Concentration on AISI 1015 and 304 Steel Exposed to Erosive Wear

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