Failure of silicon nitride ceramic flotation spheres at critical state of implosion

Zhang, Xiaolong; Feng, Miaolin; Zhao, Min; Zhang, Peizhi; He, Chenggui; Qi, Hai; Han, Weiyue; Guo, Fangquan

doi:10.1016/j.apor.2020.102080

Cited by 17 publications

(2 citation statements)

References 21 publications

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“…The abovementioned ceramic pressure housings all adopt a cylindrical shape with a metal end-cap at each end. Spherical ceramic shells are mainly used as buoyancy spheres [10,11] and, to a lesser extent, as pressure housings for ocean-bottom seismometers [12]. However, ceramic pressure housings are not widely used.…”

Section: Introductionmentioning

confidence: 99%

Analysis, Simulation and Experimental Study of the Tensile Stress Calibration of Ceramic Cylindrical Pressure Housings

Wang

Yang

et al. 2022

JMSE

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Engineering ceramics have extremely high values for both specific modulus and specific compressive strength, making them one of the most promising materials for enhancing the carrying capability of full ocean depth (FOD) submersibles. However, due to the low tensile strength of most ceramic materials, the tensile stress generated at the contact surface of ceramic pressure housings under hydrostatic pressure may exceed the material’s limits and thus lead to cracking failure. Currently, there are no valid calibration methods for the tensile stress caused by material discontinuities at the contact surface. In this paper, an approximate model is established based on contact mechanics. The absolute error of the approximate model, as verified by the simulation results for nine groups of ceramic pressure housings, does not exceed 14.2%. It is also concluded that the smaller the difference in Young’s modulus between the ceramics and metals, the higher the tensile strength safety factor. In addition, two hydrostatic pressure experiments were carried out to further verify the results of the approximate model and the numerical solutions. The approximate model is oriented to the reliable design of ceramic pressure housings. It will play an important role in improving the carrying capacity and observation capability of FOD submersibles.

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Section: Introductionmentioning

confidence: 99%

Analysis, Simulation and Experimental Study of the Tensile Stress Calibration of Ceramic Cylindrical Pressure Housings

Wang

Yang

et al. 2022

JMSE

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“…Metalized ceramics by liquid metal have a crucial uses in several modern technological applications such as solar cell [1][2][3][4] electrical devices [5][6][7] and Micro Electro Mechanical Systems (MEMS) [8][9][10]. Recently, these systems are used as the conductive wiring of microelectronic circuits; there has been considerable interest in the characterization of the structure and properties of liquid metal/ ceramic interface [11].…”

Section: Introductionmentioning

confidence: 99%

Adhesion Phenomenon of Liquid Metals

Hadef¹,

Kamli²

2021

Liquid Metals

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In this chapter, we study an interfacial phenomenon between liquid metals and ceramic substrates. Therefore, investigation of these phenomena is of great importance not only in technological applications but also in fundamental understanding of physical behavior of the adhesion between two different materials as far as their electrical structures and physiochemical properties are concerned. Moreover, adhesion energy is interpreted thermodynamically by the interfacial interactions and the nature of bonding between liquid metal and ceramic material. The adhesion energy in metal/ceramic systems is determined by using an electro-acoustical model based on the propagation of the acoustic wave in the interface and strongly depends on the electric properties of combination.

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