Evidence map›Paper›PMID 41760698›Full record

ArticleScientific reports2026

Fracture behavior of rod-in-tube layered configurations under three-point bending: an experimental investigation.

Mohan Kumar, Neelakantha V Londhe, C G Ramachandra, M Srinivas Prabhu, Praveen Kumar Kanti, Chander Prakash, H G Prashantha Kumar, Haiter Lenin Allasi

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Article in Scientific reports, 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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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Mohan KumarDepartment of Mechanical Engineering, Mangalore Institute of Technology and Engineering, VTU, Mangaluru, Karnataka, India.
Neelakantha V LondheDepartment of Mechanical Engineering, Mangalore Institute of Technology and Engineering, VTU, Mangaluru, Karnataka, India.
C G RamachandraDepartment of Mechanical Engineering, Presidency University, Bengaluru, Karnataka, India.
M Srinivas PrabhuNitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Mechanical Engineering, Nitte, 574110, Karnataka, India.
Praveen Kumar KantiCentre for Research Impact & Outcome, Chikara University Institute of Engineering and Technology, Chitkara University , Rajpura, 140401, Punjab, India.
Chander PrakashDepartment of Mechanical Engineering, Rayat-Bahra University, Mohali, Punjab, India.
H G Prashantha KumarDepartment of Aerospace Engineering, School of Engineering (SoE), Dayananda Sagar University, Bangalore, Karnataka, India.
Haiter Lenin AllasiSchool of Mechanical and Chemical Engineering, WOLLO University, Kombolcha Institute of Technology, Post Box No: 208, Kombolcha, Ethiopia. drahlenin@kiot.edu.et.ORCID http://orcid.org/0000-0003-4212-9163

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ensuring adequate fracture resistance in structural components is a critical challenge in engineering applications, as sudden crack propagation can lead to catastrophic failure. This study investigates the fracture behavior of novel rod-in-tube layered configuration using EN8 steel, aimed at enhancing fracture resistance and delaying catastrophic failure. Specimens were prepared in accordance with ASTM standards and subjected to three-point bend tests. Stress intensity factor (SIF) values were evaluated over load point displacement and time to assess crack propagation behavior. Compared to plain rod specimens, the layered configurations demonstrated a two-stage crack growth process characterized by initial steady crack propagation and subsequent delayed failure, attributed to the presence of a physical interface that arrests crack growth and redistributes stress. The configuration with an 8 mm diameter inner rod proved as effective, extending the time to failure by approximately 115% when tested and compared with plain rod. The findings affirm the layered design's effectiveness in enhancing both safe-life and fail-safe performance, offering a promising approach for improving fracture tolerance in structural applications.

Indexed as

Crack arrestEN8 steelFail-Safe designFracture mechanicsFracture toughnessLayered configurationRod-In-TubeStress intensity factor (SIF)Structural integrityThree-Point bend test

Identifiers

PMID41760698
PMCPMC13049007

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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.