Current Issue : October-December Volume : 2026 Issue Number : 4 Articles : 5 Articles
Mechanical engineering systems must sense, inspect, and navigate constrained environments and operate adaptively under uncertainty—requirements that map structurally onto capabilities achieved by biological systems through distributed sensing, morphologydriven locomotion, multimodal perception, and decentralised control. Biomimetics can therefore be interpreted not merely as a source of design inspiration but also as a functional engineering framework relevant to industrial monitoring, inspection, maintenance, and autonomous operation. This study presents a PRISMA 2020-guided systematic mapping review of the biomimetics literature explicitly relevant to mechanical-engineering functions over the decade 2016–2026. A Scopus corpus of 11,114 records was screened through a two-stage abstract-level process. After deduplication and broad relevance filtering, a stricter eligibility audit retained 505 studies assignable to five predefined functional clusters: robotics and access (235 records; 46.5%), mechanical surfaces and tribology (141; 27.9%), sensing and monitoring (106; 21.0%), vision and inspection (14; 2.8%), and control and computation (9; 1.8%). Publication output accelerated markedly after 2022, with 2025 yielding the highest annual count. The principal gap identified is not a shortage of biomimetic concepts, but their limited consolidation into deployable industrial inspection and maintenance architectures. A translational taxonomy connecting biological principles, engineering abstractions, enabling technologies, and mechanical use cases is proposed as an interpretive structuring tool for future research prioritisation and technology-readiness discussion....
Solar-driven NiTi alloy wire rotary engines are promising for lightweight actuation, but their performance is often restricted by insufficient light absorption of the alloy wire and unstable wheel–wire transmission. In this work, a collaborative surface-modification strategy was developed by combining a CNT/PDA-based photothermal coating on the NiTi alloy wire with a CNT/PDMS-based coating on the wheel surface. To establish a controllable wire-coating process, electrophoretic deposition parameters were first screened on titanium plates using an orthogonal design involving voltage, duty ratio, water content, treatment time, and electrode distance. Among the tested conditions, an electrode distance of 10 mm provided the most favorable balance between coating thickness and microstructural uniformity, while water content and electrode distance were identified as the main factors affecting coating variation. After transfer to the alloy wire, the coating greatly reduced reflectance in the 300–1400 nm range and significantly enhanced photothermal heating, increasing the maximum irradiation temperature by about 30 ◦C. On the wheel side, PDMS-based surface modification further improved rotational output, and the 1.5 wt% + 10 wt% formulation showed the best performance. In coupled rotation tests, the system with simultaneous wire and wheel modification exhibited the fastest startup and the highest angular velocity, reaching about five times that of the slowest rotating modified group. These results demonstrate that coordinated surface modification of the alloy wire and wheel is an effective route to improving the photothermal response and rotational performance of NiTi alloy wire rotary engines....
To address the insufficient strength of friction-stir-welded (FSW) ultra-high-strength Al–Cu– Li alloy joints, the effects of post-weld heat treatment (PWHT) on microstructural evolution and mechanical properties were systematically investigated. The as-welded joint showed a “W”-shaped microhardness profile, with the minimum value located in the thermomechanically affected zone (TMAZ), mainly caused by the dissolution of T1 phases and precipitation of coarse AlCu, AlCuMg, and AlCuMn phases during welding. Direct artificial aging at 155 ◦C for 24 h failed to improve joint strength due to solute depletion induced by pre-existing coarse secondary phases. Solution treatment re-dissolved coarse precipitates into the matrix, and subsequent aging led to uniform precipitation dominated by T1 and θ′ phases, with a consistent microhardness of ~155 HV across all zones. By introducing pre-stretching deformation after solution treatment, T1 became the dominant strengthening phase in all regions, accompanied by a remarkable increase in both microhardness and tensile strength. With 3% pre-stretching, the microhardness reached 185 HV, and the ultimate tensile strength of the joint reached 600 MPa, corresponding to a joint efficiency as high as 95%, which is superior to most reported values for Al–Li alloy FSW joints. This study clarifies the precipitation evolution mechanism under tailored PWHT and provides an effective strategy for property regulation of high-performance Al–Cu–Li alloy FSW structures in aerospace applications....
This study investigates the incorporation of high-entropy alloys (HEAs) into aluminum matrix composites (AMCs) via powder metallurgy to improve their mechanical, thermal, and electrical properties. Significant improvements in mechanical performance were observed by systematically varying HEA content from 0% to 30%. At 30 wt.% HEA, the composite exhibited a 37.95% increase in bulk modulus and a 33.57% rise in Young’s modulus compared to pure aluminum. Microhardness improved by approximately 60%, attributed to interfacial bonding, dispersion strengthening, and grain refinement. However, increased HEA content led to higher porosity, which slightly diminished physical transport properties such as electrical and thermal conductivity, decreasing by 16.9% and 33.3%, respectively. Thermal expansion was reduced with increasing entropy content, indicating enhanced dimensional stability. Advanced sintering techniques under argon atmosphere helped mitigate porosity and improve interfacial interactions. These findings highlight the potential of HEA-reinforced AMCs as lightweight, high-performance materials for aerospace, automotive, and high-temperature applications where mechanical strength and stability are critical....
The use of bilingual abstracts in Indonesian academic journals plays an important role in increasing the international visibility of scientific publications. However, inaccuracies in translating technical terminology may lead to semantic shifts and reduce the clarity of scientific communication. This study investigates semantic equivalence in the translation of mechanical engineering terms found in bilingual abstracts of Jurnal Teknik Mesin. The objectives of this study are to analyze the degree of semantic equivalence achieved in the translation process and to identify the dominant equivalence types used in translating mechanical engineering terminology from English into Indonesian. This research employed a qualitative descriptive method. The data consisted of 85 mechanical engineering terms collected from 20 bilingual abstracts published in Jurnal Teknik Mesin between 2021 and 2024. The data were selected based on the occurrence of specialized mechanical engineering terminology and analyzed using the semantic equivalence framework proposed by Nida and Taber (1982), supported by Newmark’s (1988) theory of technical translation. The findings reveal that formal equivalence is the dominant translation type, accounting for 52% of the data, followed by dynamic equivalence (28%), partial equivalence (13%), and semantic shift (7%). Formal equivalence is mainly used for standardized technical terms such as tensile strength and heat transfer, while semantic shifts frequently occur due to inaccurate lexical selection and insufficient technical understanding. The study concludes that maintaining semantic equivalence in bilingual engineering abstracts requires both linguistic competence and domain-specific knowledge to ensure precision, consistency, and clarity in technical communication....
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