Oblique Quasi-Static Indentation and Residual Compressive Behavior of Hybrid Woven Composite Laminates.

Obinna Emmanuel Ebubechukwu, Guohui Chang, Qing Miao, Hiranya Uthpali Herath, Jiaxi Zhang, Deng'an Cai

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Article in Materials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Obinna Emmanuel EbubechukwuState Key Laboratory of Mechanics and Control for Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.ORCID 0009-0000-2042-1716

Guohui ChangState Key Laboratory of Mechanics and Control for Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

Qing MiaoAVIC Chengdu Aircraft Design & Research Institute, Chengdu 610091, China.

Hiranya Uthpali HerathState Key Laboratory of Mechanics and Control for Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.ORCID 0009-0009-1042-1996

Jiaxi ZhangAVIC Chengdu Aircraft Design & Research Institute, Chengdu 610091, China.

Deng'an CaiState Key Laboratory of Mechanics and Control for Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.ORCID 0000-0001-8953-1374

Funding

Open Funding of National Key Laboratory of Digital and Agile Aircraft Design F20250208

6 · The paper itself

Abstract

The influence of oblique quasi-static indentation (QSI) angles on damage evolution and the residual compressive behavior of carbon-glass hybrid woven composite laminates is investigated. Hemispherical indentation tests were performed at 15° and 30° oblique angles, and three QSI specimens and two CAI (compression after Indentation) specimens were tested at each indentation angle, while CT analysis was performed on one representative specimen per angle. The results show that increasing the indentation angle had little effect on the peak indentation load but significantly increased the displacement at peak load and the total energy absorption. The CT analysis showed that the 30° indentation caused a wider and more distributed damage morphology compared to the localized damage pattern observed at 15°. Interestingly, the residual CAI strength of the 30° specimens was higher than that of the 15° specimens, which may be associated with the more distributed damage morphology and reduced severity of localized damage concentration. The progressive damage analysis using a homogenized ply-level Hashin progressive damage model implemented in Abaqus/Explicit is in good agreement with experimental results. These results provide insight into the mechanics of oblique contact damage in hybrid woven composites, which are important for damage-tolerant aerospace structural design.

Indexed as

compression after indentationfailure mechanismfinite elementhybrid woven compositesquasi-static indentationstacking sequences

Identifiers

PMID42654553

DOI10.3390/ma19163399

PMCPMC13514919

What OpenQuestion holds

Textmetadata

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.