Summary

Eng (ISSN 2673-4117) is an international, peer-reviewed open access journal which publishes original papers, critical reviews, rapid communications, technical notes, and discussions on all areas of engineering. Eng's aim is to encourage scientists to publish their experimental and theoretical research relating to engineering science and technology in as much detail as possible. There is no restriction on the maximum length of the papers. Launched in 2020, Eng was indexed in Scopus in 2023. The journal was subsequently included in the Emerging Sources Citation Index (ESCI, Web of Science) in March 2024 and Ei Compendex in April 2025. It holds a 2025 Impact Factor of 3.5 and is ranked JCR Q1 in the “ENGINEERING, MULTIDISCIPLINARY” category. Its 2025 CiteScore is 4.1, and it currently ranks Q2 in Scopus’ “Engineering (miscellaneous)” category.

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Power Conversion Efficiency
Power conversion efficiency (commonly abbreviated as PCE) is a fundamental dimensionless photovoltaic performance metric defined as the ratio between the maximum electrical output power generated by a photovoltaic device and the incident optical input power striking the active device area under well‑defined illumination, temperature, and spectral test conditions [1][2]. It quantifies the fractional capability of a solar‑cell device to transform incoming radiant solar energy into usable direct‑current electrical power, conventionally reported as a percentage value [3]. This parameter is dependent on intrinsic material optoelectronic characteristics, device layer architecture, and external operating conditions including irradiance magnitude, ambient temperature, and incident light spectrum [4][5]. Power conversion efficiency is mathematically derived from three core device figures‑of‑merit: open‑circuit voltage, short‑circuit current density, and fill factor, and it serves as the primary comparative benchmark for evaluating and classifying different photovoltaic absorber materials and solar‑cell configurations [6].
  • 26
  • 14 Sep 2026
Topic Review
Load‑Bearing Capacity
Load‑bearing capacity is a fundamental geotechnical and structural engineering parameter representing the maximum magnitude of external load that a foundation, structural component, or geomaterial system can sustain without experiencing catastrophic failure or excessive irreversible deformation [1][2]. It describes the limiting load state at which the material or structural system reaches its internal strength limit, where shear rupture, plastic collapse, or instability occurs within the loaded domain [3][4]. Load‑bearing capacity accounts for intrinsic material mechanical properties as well as geometric boundary conditions of the element or ground system under consideration [2][5].
  • 25
  • 14 Sep 2026
Topic Review
Fiber Reinforced Polymer
Fiber‑reinforced polymer is a class of two‑phase composite material consisting of discrete reinforcing fibrous phases embedded within a continuous polymer matrix phase [1][2]. The fibrous phase primarily bears applied mechanical loads, while the surrounding polymer matrix transfers stress among individual fibers, constrains fiber position, and provides environmental protection for the reinforcing constituents [2][3]. Its constituent fibrous phase may comprise glass, carbon, aramid, or alternative inorganic and organic fibers, whereas the polymer matrix can be either thermosetting or thermoplastic polymer substances [1][4]. Fiber‑reinforced polymer is defined by its heterogeneous multi‑phase microstructure, in which fibers and polymer matrix retain their distinct original chemical identities without forming homogeneous solid‑solution products during material formation [3][5].
  • 16
  • 14 Sep 2026
Topic Review
Green Engineering
Green engineering is an environmental-focused branch of engineering that investigates the design, commercialization, and operation of processes, products, and systems with the primary objective of minimizing risks to human health and the environment from the earliest stages of conception through to eventual decommissioning [1][2][3]. It prioritizes pollution and waste prevention over end-of-pipe treatment, recognizing that avoiding the generation of hazardous byproducts is fundamentally more effective and cost-efficient than managing them after they have been created. This approach places strong emphasis on inherently safe material selection, reaction pathways, and process optimization that collectively reduce environmental burdens without compromising economic viability or technical performance criteria [2][3]. The discipline employs a cradle-to-grave life cycle framework to systematically assess and mitigate environmental impacts across all developmental stages—from raw material extraction and manufacturing through use, transportation, and end-of-life recovery or disposal—while maintaining that ecological considerations must be structurally integrated into engineering decision-making rather than applied as retrofitted controls after design completion [1][4][5]. As such, the term “green engineering” denotes a safety-by-design and inherently safer methodology applied to macro‑level engineering systems, which is conceptually and methodologically distinct from green chemistry—which focuses on molecular‑level innovations for safer chemicals and reactions—and also distinct from general corporate environmental compliance, which typically addresses regulatory conformance rather than proactive systemic redesign [6][7].
  • 40
  • 11 Sep 2026
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