Chang'an University

A Quality-Aware Multimodal Reliability Framework for Health Assessment and Remaining Useful Life Prediction of Cold-Region Tunnels

This study proposes a quality-aware multimodal framework for health-state assessment and remaining useful life (RUL) prediction of cold-region tunnels. The framework integrates structural-response, environmental, apparent-defect, and engineering-inspectiondata, with the apparent-...

Real-Time Road Crack Detection on Smartphones Through ConvLSTM-Based Temporal Knowledge Distillation from a CNN-KAN and VMamba Dual-Path Network

Road crack images captured by smartphones suffer from low resolution, uneven illumination, and complex background interference. Mobile devices also have limited resources for real-time high-accuracy segmentation. A two-stage framework combines a high-accuracy dual-path teacher mo...

Zonal Variations in Cavern Inflow Features and Water Management of Pumped Hydro Storage in China

Pumped hydro storage is a well-established and reliable form of energy storage, with construction scale expanding steadily in recent years. Underground cavern excavation is an indispensable part of pumped storage construction, while sustained cavern inflow poses potential threats...

Phase-based self-balancing strategy and performance evaluation of a compact K-H-V planetary vibratory mixer under 43 g high-frequency excitation

To address severe structural vibration and premature fatigue failure in compact high-frequency vibratory mixers, this study proposes an integrated small-teeth-difference planetary vibratory mixer with a phase-based self-balancing mechanism. The mechanism uses a fixed internal rin...

Multi-Scale Characterization of Interfacial Adhesion and Material Selection for Crack Sealants in High-Altitude Airport Asphalt Pavements

Asphalt pavements at high-altitude airports endure prolonged extreme low temperatures and large diurnal swings, imposing stringent demands on crack sealants, whose multi-scale adhesion failure mechanism remains unclear. Three SBS and crumb-rubber-composite-modified sealants, desi...

A Hybrid Ridge Regression–Convolutional Bidirectional Long Short-Term Memory Framework with Dual-Level Transfer Learning for State-of-Health Estimation of Lithium-Ion Batteries Under High Temperatures

Accurate state-of-health estimation of lithium-ion batteries under high-temperature conditions (40–50 °C) remains challenging because of accelerated electrochemical degradation and strongly nonlinear aging patterns. This paper presents a hybrid Ridge regression–convolutional bidi...

Efficient 3D Transient Electromagnetic Model Order Reduction Inversion for Arbitrary Transmitter Waveforms Based on Convolution

Three-dimensional inversion of airborne transient electromagnetic (ATEM) data is computationally demanding because it requires repeated forward simulations and sensitivity calculations. Previous Krylov-subspace studies have substantially improved the efficiency of three-dimension...

Rapid Repair Epoxy Mortar Fully Replacing Natural Aggregate and Filler with Graded Iron Tailings: Performance and Reinforcement

Numerous studies have investigated the application of iron tailings as raw materials for cement concrete, while rare efforts have been devoted to developing epoxy pavement repair mortars where graded IT function simultaneously as fine aggregate and filler. This study prepared epo...

Automatic Line Drawing Generation for Grotto Wall Surfaces Based on Depth Map and Normal Map Fusion

Abstract. To address the lack of suitable methods for automatic 2D line drawing generation from grotto wall mesh models, as well as the difficulty of existing methods in balancing structural representation and detail preservation, this paper proposes a line drawing generation met...

Research on Hyperspectral-Based Feature Set Construction and Machine Learning Inversion for Mixed Salts Characteristics in Murals

Abstract. To enable non-destructive quantitative identification of mixed salts in mural plaster layers, hyperspectral data were collected from Na₂SO₄-CaCl₂ mixed-salt samples. Based on these data, a method integrating spectral preprocessing, feature-set construction, and machine-...

Effect of Ion Chelating Agent on the Ion Corrosion Resistance of Concrete Partially Immersed in Different Salt Solutions

Abstract Concrete partially immersed in saline solutions suffers double damage from salt crystallization and harmful ion corrosion. The ion chelating agent (ICA) can stimulate the production of crystalline products to repair concrete damage and densify its structure. Based on thi...