Constitutive equations for strain rate and temperature dependent mechanical behaviour of porous Ag-sintered joints in electronic packages

Lederer, M.; Gokdeniz, Zeynep Gokce; Khatibi, Golta; Nicolics, J.

doi:10.1016/j.microrel.2021.114209

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…18 This creep law is frequently applied in the cases where the solder mechanical response is basically driven by the steady-state creep. [19][20][21][22][23][24] For the use of Garofalo's law or the Anand model in simulation of the creep behavior of sintered silver, many researchers have chosen the Anand model and many other used the hyperbolic sine model of Garofalo. [25][26][27] Yu et al, 28 preferred the use of Anand's law because it considers the effect of strain rate and temperature dependency.…”

Section: Introductionmentioning

confidence: 99%

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Applying Anand versus Garofalo creep constitutive models for simulating sintered silver die attachments in power electronics

Gharaibeh,

Wilde

2023

The Journal of Strain Analysis for Engineering Design

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This paper aims to examine the thermomechanical response of sintered silver die attachments in power electronics using finite element analysis (FEA). In this work, several material parameters of the sintered silver bonds are investigated. Additionally, two common solder creep constitutive laws including Anand and Garofalo models are also studied. To ensure the fidelity of the simulation procedures, the finite element (FE) models are first correlated with digital image correlation data. Afterward, the FE models are utilized to examine the influence of the material and creep models on the die attach stresses, strains, and plastic works. The expected fatigue and lifetime predictions of the sintered silver layer are thoroughly discussed, accordingly. The results proved that the die attach layer mechanical response is highly driven by the material parameters and creep modeling procedures considered throughout the simulations. Thus, the resulting fatigue life is evaluated. Finally, a general modeling guideline for simulating thermomechanical response of sintered silver die attachments in power electronics are provided in great detail.

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Section: Introductionmentioning

confidence: 99%

“…18 This creep law is frequently applied in the cases where the solder mechanical response is basically driven by the steady-state creep. 19–24…”

Section: Introductionmentioning

confidence: 99%

Applying Anand versus Garofalo creep constitutive models for simulating sintered silver die attachments in power electronics

Gharaibeh,

Wilde

2023

The Journal of Strain Analysis for Engineering Design

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Thermal creep and fatigue failure of the sintered silver solder in a SiC-IGBT module under power cycling

Huang,

Wang,

Zhu

et al. 2023

Engineering Failure Analysis

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Electromagnetic absorption properties of FexCoNi magnetic nano particles

Li,

Yang

et al. 2024

Journal of Applied Physics

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The microstructure morphology, static magnetic properties, and electromagnetic absorption characteristics of nano FexCoNi alloy particles prepared by chemical liquid deposition with five different Fe content levels are investigated in this paper. The results show that spherical FexCoNi alloy particles with an average particle size of about 100–200 nm and a face-centered cubic crystal structure were obtained. All five samples exhibited soft magnetic behavior, with the saturation magnetization intensity showing an increasing-then-decreasing trend with increasing Fe content, peaking at 141.8 emu/g for Fe content x = 1.0. The dielectric constants (real and imaginary parts) of the prepared alloy particles exhibit significant differences with respect to the variation of Fe content, while the changes in the real and imaginary parts of the magnetic permeability show less pronounced effects with increasing Fe content. As the electromagnetic wave frequency increases, the real parts of the dielectric constants for all composites show minimal fluctuations, and the real parts of the magnetic permeability exhibit a decreasing trend. Moreover, the imaginary parts of the dielectric constants and magnetic permeability show an increasing followed by a decreasing trend as the frequency rises. The material with Fe content x = 1 demonstrated optimal dielectric loss performance and relatively excellent magnetic loss performance, with a sample thickness of 1.9 mm exhibiting the highest reflection loss (RLmax) of −24.2 dB and an effective absorption bandwidth of 4.48 GHz.

show abstract

Constitutive equations for strain rate and temperature dependent mechanical behaviour of porous Ag-sintered joints in electronic packages

Cited by 6 publications

References 13 publications

Applying Anand versus Garofalo creep constitutive models for simulating sintered silver die attachments in power electronics

Applying Anand versus Garofalo creep constitutive models for simulating sintered silver die attachments in power electronics

Thermal creep and fatigue failure of the sintered silver solder in a SiC-IGBT module under power cycling

Electromagnetic absorption properties of FexCoNi magnetic nano particles

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