⚡ electrical engineering

Increasing the fatigue life of cold forged components through the use of a counter punch

This study demonstrates that applying an optimized counterforce of 60 kN during modified forward extrusion enhances the fatigue life of cold-forged components by tailoring residual stresses to reduce surface tensile stress, though exceeding this threshold diminishes the benefits due to adverse interactions with external loads.

Christian Siedbürger, Holger Hoche, Florian Geister, Peter Groche, Matthias Oechsner2026-08-05
⚡ electrical engineering

Denser monitoring networks can degrade urban emission inversions when meteorological representativeness error is ignored

This study demonstrates that ignoring meteorological representativeness errors in urban emission inversions causes denser monitoring networks to produce increasingly overconfident and inaccurate results, but incorporating a Bayesian approximation-error covariance correction restores statistical reliability and improves spatial resolution.

Hao Liu2026-08-05
⚡ electrical engineering

Biomass-Integrated CCHP Systems in Data Centers: Environmental Impact and Performance Analysis

This study demonstrates that integrating woody biomass with combined cooling, heat, and power (CCHP) systems offers a highly efficient, profitable, and environmentally sustainable solution for powering data centers in Japan's regional cities, achieving significantly higher energy efficiency, nearly double the five-year profitability, and an 82.3% reduction in global warming potential compared to conventional approaches.

Hikaru Furugori, Daichi Teragawa, Kiyoshi Dowaki2026-08-05
⚡ electrical engineering

A Durable Membrane-Free Platform for Green Hydrogen and High-Purity Ammonium Recovery Powered by Human Urine Remediation

This paper presents a durable, membrane-free platform that simultaneously recovers high-purity ammonium and produces green hydrogen from undiluted human urine with net energy gain, utilizing immobilized urease and a high-performance KCoHCF electrode to achieve efficient nitrogen recovery and organic matter removal while employing a physics-informed model for autonomous long-term operation.

Am Jang, Duc Anh Nguyen, Kim Anh Nguyen Thi, Taehun Kim, Hongrae Im2026-08-05
⚡ electrical engineering

AI-Assisted Multidisciplinary Design Optimization of Hydrogen-Electric Aircraft Integrating Aerodynamics, Propulsion, Thermal Management, and Structural Mass

This paper proposes a novel AI-accelerated multidisciplinary design optimization framework that integrates physics-informed neural network surrogates with high-fidelity solvers to simultaneously optimize aerodynamics, propulsion, thermal management, and structural mass for hydrogen-electric aircraft, thereby enabling rapid exploration of trade-offs between maximum take-off weight, mission range, and thermal drag penalties.

MD AZIZUL HAKIM ABIR, Bondhon Paul2026-08-05
⚡ electrical engineering

Evaluation of Thermal Cycles and Microstructure in an ER2209 Stainless Steel Preform Fabricated by the WAAM-GMA Process

This study evaluates the thermal cycles and microstructural evolution of an ER2209 duplex stainless steel preform fabricated via WAAM-GMA, revealing that uncontrolled heat input leads to excessive austenite content, potential harmful phase precipitation, and undesirable geometric variations.

Luis Luigiouv Kirvdoff Vargas del Aguila, Kleber Eduardo Bianchi, Daniel Souza, Sabrina Espinosa Cabrera, Thais Andrezza (…)2026-08-05
⚡ electrical engineering

Risk Management and Safety Compliance Strategies in Modern Aviation Ground Operations

This paper argues that transitioning from traditional to data-driven, intelligence-augmented flight dispatch systems significantly enhances aviation ground safety and operational efficiency by reducing decision latency, improving fuel planning, and minimizing delays, thereby establishing intelligent dispatch as a necessary evolution in modern aviation management.

Sakir Alim, Jamil Akhtar2026-08-05
⚡ electrical engineering

Self-Evolving Digital Twin for Zero-Defect Manufacturing Using Physics-Informed Reinforcement Learning and Multi-Agent Artificial Intelligence: A Case Study on Five-Axis Milling of Ti-6Al-4V.

This paper proposes and validates a self-evolving digital twin framework that integrates physics-informed machine learning, Bayesian parameter updating, and multi-agent reinforcement learning to achieve zero-defect five-axis milling of Ti-6Al-4V by dynamically predicting defects and optimizing machining parameters in real time, resulting in significant reductions in surface roughness variance, tool wear, energy consumption, and defect rates compared to conventional strategies.

MD AZIZUL HAKIM ABIR, BONDHON PAUL2026-08-05
⚡ electrical engineering

Compact Cross Dipole Metamaterial-Inspired THz Antenna for Non-invasive early Breast Tumor Detection

This paper presents a compact, high-performance 2.6 THz microstrip patch antenna featuring a metamaterial-inspired cross-dipole reflector that achieves 94% radiation efficiency and 6.6 dBi gain while enabling the sensitive, multi-parameter detection of minute breast tumors (10–20 µm) through simultaneous analysis of reflection, transmission, and SAR contrast.

Sreedevi M G2026-08-05
⚡ electrical engineering

S-Shaped Bifurcation Cascades and Loop Proliferation in an Active Magnetic Bearing Rotor with Cubic Shaft Stiffness and Nonlinear Aerodynamic Drag

This paper utilizes the Harmonic Quadrature Method and Floquet stability analysis to reveal how proportional and derivative gains, cubic shaft stiffness, and nonlinear aerodynamic drag interact to drive complex S-shaped bifurcation cascades, extensive loop proliferation with over 36 saddle-node bifurcations, and distinct damping regimes in active magnetic bearing-supported flexible rotors.

Farouk Thaljaoui, Thabet Guesmi, Thaljaoui Wathek2026-08-05