3D modeling and experimental investigation on the damage behavior of an interpenetrating metal ceramic composite (IMCC) under compression

Schukraft, Joél; Horny, Dominik; Schulz, Katrin; Weidenmann, Kay André

doi:10.1016/j.msea.2022.143147

Cited by 17 publications

(8 citation statements)

References 40 publications

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“…The reason is a change of damage mechanism in the ceramic from crack initiation before

σ_{max}

to crack growth and coalescence beyond

σ_{max}

as described in ref. [34].…”

Section: Discussionmentioning

confidence: 99%

“…[32] A detailed description of the infiltration process and a characterization of the microstructure are provided elsewhere. [33,34] For the numerical simulations, the material microstructure has been reconstructed, filtered, and mashed based on X-ray CT-scans as described in ref. [35].…”

Section: Composite Materialsmentioning

confidence: 99%

“…As recent studies on the interpenetrating Al 2 O 3 /AlSi10Mg composite have shown, first cracks mainly occur in the ceramic or at the interface when loaded under compression. [34,35] The idea is to heal these cracks by using the AlSi10Mg as the low-melting filler. Therefore, heat is applied as a trigger to melt the close eutectic aluminum alloy (T m % 550 °C), whereas the ceramic foam remains unaffected by this temperature.…”

Section: Self-healing Conceptmentioning

confidence: 99%

“…Based on previous experiments on the damage behavior of the material system, [34,54] four different damage states have been selected in order to introduce cracks with varying thickness.…”

Section: Predamagingmentioning

confidence: 99%

“…During loading, the ceramic phase undergoes a successive damage process as described in the authors' previous works. [34,35] The fraction of damaged ceramic elements (i.e., elements in which the Rankine damage initiation criterion is met) and the failed ceramic elements (i.e., elements that are fully damaged according to Equation ( 6) and lost their load carrying capability) plotted over the loading strain of the pristine IMCC are shown in Figure 11.…”

Section: D Microstructure Modelmentioning

confidence: 99%

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Numerical and Experimental Investigation on the Self‐Healing Potential of Interpenetrating Metal–Ceramic Composites

et al. 2023

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An interpenetrating metal ceramic composite (IMCC) has been investigated regarding the potential as well as the feasibility of self‐healing. Triggered by heating, cracks in the damaged composite located mainly in the Al2O3 ceramic or at the interface could be filled and closed by the liquid AlSi10Mg metal alloy. This healing procedure promises to reduce stress concentrations at crack tips and to improve the mechanical properties compared to the predamaged composite. Two different numerical approaches have been introduced to investigate this assumption and the potential of self‐healed IMCCs for a best case scenario: 1) A simple 2D model to analyze the reduction of stress concentrations in front of a crack tip within the ceramic due to healing and 2) a 3D model based on CT‐scan reconstructed microstructures to study how macroscopic mechanical properties can be restored depending on the amount of predamage. Further, the self‐healing approach has been investigated experimentally for the same composite. Despite the fact that experimental self‐healing of the investigated IMCC is only moderately feasible so far, the study shows the great potential that can still be exploited in order to extend the service life time of IMCC engineering components.

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“…The reason is a change of damage mechanism in the ceramic from crack initiation before

σ_{max}

to crack growth and coalescence beyond

σ_{max}

as described in ref. [34].…”

Section: Discussionmentioning

confidence: 99%

Section: Composite Materialsmentioning

confidence: 99%

Section: Self-healing Conceptmentioning

confidence: 99%

“…Based on previous experiments on the damage behavior of the material system, [34,54] four different damage states have been selected in order to introduce cracks with varying thickness.…”

Section: Predamagingmentioning

confidence: 99%

Section: D Microstructure Modelmentioning

confidence: 99%

See 3 more Smart Citations