Article
Engineering, Mechanical
U. Martin, D. M. Bastidas
Summary: This study presents the premature failure analysis of AIISI 1018 carbon steel reinforcing bars caused by stress corrosion cracking (SCC) and its pit-to-crack transition mechanism. The service conditions under carbonation process and chloride contaminated environment were simulated to mimic pH drop and localized attack. It was found that the crack growth rate was more pH dependent than chloride dependent. The formation of siderite and further dissolution enhanced the anodic kinetics, leading to increased dissolution rate and crack propagation after reaching the stress intensity factor for SCC development.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Jinheung Park, Matruprasad Rout, Kyung-Mun Min, Shuai-Feng Chen, Myoung-Gyu Lee
Summary: A microstructure-based multiscale framework was developed to study the relationship between microstructure evolution and mechanical behavior of AISI 304LN stainless steel. The model effectively combines crystal plasticity finite element method and probabilistic cellular automata approach to accurately simulate heterogeneous deformation and dynamic recrystallization. The model was validated by comparing it with experimental data, demonstrating its ability to predict flow stresses, grain sizes, DRX volume fraction, and deformed texture. The developed model also allows for examination of recrystallized grains and pole figures during the DRX process, as well as characterization of mechanical responses at the grain level.
MECHANICS OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Kaushal Kishore, R. Gaurav Kumar, Avanish Kumar Chandan
Summary: The study investigated the effect of strain rate on the micro-mechanism of plastic deformation and work hardening behavior of AISI 304 stainless steel. It found a crossover in the work hardening plot between slow and high strain rate specimens at around 5% strain, and examined substructure evolution using transmission electron microscope and electron back-scattered diffraction. Differences in the work hardening mechanisms were attributed to factors such as twinning, martensite formation, and cross-slip.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Coatings & Films
Tae Hwan Kim, Gyeong Yun, Jong Jeon, Ki Yong Lee, Sik Shim, Wookjin Lee
Summary: The study demonstrates that laser rescanning significantly enhances the mechanical properties of the 316L alloy produced by laser direct energy deposition (LDED), including increased yield strength, ultimate tensile strength, and ductility.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Wojciech Macek, Rui F. Martins, Ricardo Branco, Zbigniew Marciniak, Miroslaw Szala, Sebastian Wronski
Summary: This paper focuses on studying the impact of fatigue loading on metallic structure, lifetime, and fracture surface topographies in AISI H13 steel specimens obtained by selective laser melting (SLM). The investigation compares the fatigue results of SLM 3D printed steel specimens with conventionally manufactured 13H steel. The research also analyzes the fractographic evaluation and microtomography to understand the influence of stress levels and porosity distribution on the fracture surfaces.
INTERNATIONAL JOURNAL OF FRACTURE
(2022)
Article
Engineering, Chemical
Surya Sarkar, Sirsendu Sengupta, Sourav Kr. Saha, Naresh Chandra Murmu, Samik Dutta, Priyabrata Banerjee
Summary: Automatic detection of corrosion inhibition efficacy by processing microscopic images of the sample surface using image texture analysis is a useful technique. Pre-processing and texture analysis enable precise feature extraction, and multi-regression analysis allows for quantifying the extracted features to evaluate corrosion inhibition efficiency.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Vito Errico, Paolo Posa, Li Liang, Marco Maurizi, Di Wan, Andrea Angelastro, Chao Gao, Sabina Luisa Campanelli, Filippo Berto
Summary: This study aims to expand the multi-layer printing capabilities of L-PBF by enabling the manufacturing of two different materials in the same layer. The results show that the method is repeatable and capable of fabricating strong and tough intralayer interfaces. No modifications to the machine are required, and the implementation is cost-effective.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Computer Science, Artificial Intelligence
Muhammad Zahir Khan, Muhammad Farid Khan, Muhammad Aslam, Abdur Razzaque Mughal
Summary: Quality control charts, specifically the average run length (ARL), are important for statistical process control. ARL measures the number of sample points needed before an out-of-control condition is detected. In this study, the performance of one type of control chart, the exponentially weighted moving average (EWMA), is evaluated using ARL in both conventional and fuzzy environments. The comparison between fuzzy EWMA and conventional EWMA shows that the former detects a shift earlier than the latter. A real-life example of a measurement of food color is used to demonstrate the conventional and fuzzy EWMA control charts.
Article
Engineering, Mechanical
Yuankai Zhou, Xiang Tang, Xue Zuo
Summary: Research shows that multi-stage running-in process can improve the quality and efficiency of running-in in diesel engines. The use of fractal dimensions and friction coefficient for characterization can better predict the quality of running-in process.
Article
Engineering, Mechanical
Anirban Bhattacharya, Surajit Kumar Paul, Abhay Sharma
Summary: The present study utilizes a two-camera digital image correlation (DIC)-based technique to simultaneously measure strain on two mutually orthogonal surfaces, capturing the strain accumulation and subsequent failure behavior of WAAM deposited low carbon steel samples. Multiple delaminations and strain accumulation sites are observed due to weak interlayer consolidation, and delamination propagation contributes to failure. Dimples and intergranular fractures are observed on failure surfaces. High cycle fatigue tests result in premature failure near internal defects, and fatigue crack initiation and propagation are distinct on fracture surfaces.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Mehdi Shaban Ghazani, Beitallah Eghbali
Summary: This study investigated the hot deformation behavior and microstructural evolution of AISI 321 austenitic stainless steel under different conditions using hot flow curves and strain hardening exponent. The results showed dynamic recovery, single and multiple peak dynamic recrystallization, and interactions between dynamic recrystallization and precipitation under different conditions.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Metallurgy & Metallurgical Engineering
M. Prabhakaran, Jeyasimman Duraisamy, N. Siva Shanmugam, A. Rajesh Kannan, M. Varatharajalu
Summary: The effect of welding current and heating cycle on weld strength was studied in this research. The results showed that the highest welding current and heating cycle obtained the largest weld nugget and absorbed the maximum tensile shear load.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Materials Science, Multidisciplinary
Gustavo Henrique Pelissari, Diogo Pedrino Braga, Pedro Henrique Fernandes Oliveira, Danielle Cristina Camilo Magalhaes, Maurizio Ferrante, Carlos Alberto Della Rovere, Andrea Madeira Kliauga, Levi de Oliveira Bueno, Vitor Luiz Sordi
Summary: AISI 200LN is a low nickel austenitic stainless steel with excellent mechanical properties at room and cryogenic temperatures, and this study aims to assess its mechanical response under hot tensile and creep tests. By conducting tests and analyzing correlations among various factors, the study provides insights into the creep behavior of AISI 201LN alloy, compared to traditional stainless steels in the 300 series.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Sai-yan Primee, Patiphan Juijerm
Summary: Mechanical surface treatments such as deep rolling or shot peening can improve the fatigue performance of metallic materials by generating compressive residual stresses and work hardening layers. The stability of these residual stresses and work hardening states during fatigue is crucial, as they can inhibit crack initiation and propagation. Strain ageing, which involves solute atoms pinning dislocations, is one way to maintain the stability of these near-surface states. In this study, conventional and modified deep rolling techniques on martensitic stainless steel were evaluated for their fatigue performance and strain ageing effects.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Soroush Bakhshi, Alireza Mirak
Summary: By varying the low temperature transformation time, the microstructural & textural changes, mechanical properties, and fracture behavior of a two-phase AISI 4340 steel can be controlled to achieve improved toughness and ductility characteristics.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Arpan Das
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
(2018)
Article
Materials Science, Multidisciplinary
Arpan Das
MATERIALS SCIENCE AND TECHNOLOGY
(2018)
Article
Materials Science, Multidisciplinary
Arpan Das
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Arpan Das, Chandra Bhanu Basak
PHILOSOPHICAL MAGAZINE
(2018)
Review
Materials Science, Multidisciplinary
Arpan Das
MATERIALS CHARACTERIZATION
(2019)
Review
Computer Science, Interdisciplinary Applications
Arpan Das
Summary: Research on fracture micro mechanisms of ductile porous solids has been conducted worldwide for the past 60 years, with a focus on various experiments, theories, thermodynamics, and computer models. The complex interactions between engineering/metallurgical variables significantly influence void volume fraction accumulation during tensile deformation in ductile materials. While the role of micro void nucleation and growth in ductile fracture is established, certain micro mechanisms governing this process remain unclear, such as micro void coalescence.
ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING
(2021)
Review
Computer Science, Interdisciplinary Applications
Arpan Das
Summary: A neural network model has been established to predict the flow stress during hot deformation of various zirconium alloys. The model performs well and accurately predicts experimental data. Analysis shows that neural computation is an effective tool for modeling the complex behavior of flow stress in different zirconium alloys.
ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING
(2021)
Article
Metallurgy & Metallurgical Engineering
Arpan Das
Summary: This article focuses on the quantification and analysis of two-dimensional fracture features of low-carbon martensitic steel generated through temperature variation during dynamic impact experiments. The changes in microstructural states and corresponding impact responses of the steel as a function of test temperature have been quantified and compared. Image texture analysis has also been performed to understand the deformation and fracture energy of the steel during dynamic impact loading in relation to temperature.
METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Arpan Das
Summary: This article characterizes and analyzes the dimple geometry on the tensile fracture surfaces of a HfNbTaTiZr refractory high entropy alloy with different matrix microstructures. The study quantifies the changes in fracture complexions caused by different microstructural states and correlates them with the tensile responses of the alloy. This interpretation enables the quantitative use of fracture surface morphology and image texture.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Arpan Das
Summary: The fractal dimension of a novel flaky microstructure composed of crystals with hierarchical 3D nanolayered alpha/13-Zr networks in Zr-2.5Nb alloy was measured and correlated with its mechanical properties as a function of annealing temperature. Image texture analysis was performed to understand the stored-energy and thermal stability of these networks, revealing their invasive fractal character and chaos.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Arpan Das
Summary: Research reveals that the 2D-fractal dimensions of B2-phase in high-specific-strength-steel are correlated with the fractal-dimensions of dimples formed after tensile deformation and fracture. This correlation depends on the strain-rate and is independent of the initial inclusion and second-phase volumes. The average dimple-size is inversely correlated to strength and toughness properties, but positively correlated to uniform-ductility with strain-rate.
Article
Materials Science, Multidisciplinary
Arpan Das
Summary: This study quantifies and assesses the two-dimensional ductile dimple geometry of Ti-6Al-4V alloy generated through different ultrasonic vibration powers during tensile experiments. The change in microstructural states and their corresponding mechanical responses were extensively compared and interpreted. The results indicate that the ultrasonic vibration significantly affects the tensile responses and fracture appearances of the alloy.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Construction & Building Technology
Arpan Das
Summary: Fracture is the separation of an object into different pieces under external stress, and the fracture surface reflects the deformation history of the material. In this study, two-dimensional ductile fracture characteristics were quantitatively measured on published creep-ruptured fractographs of a ferritic steel with different dimensions. The statistical distribution of diverse-sized dimples on the fracture surfaces was analyzed to understand the nature of disparity in creep responses of the steel. The research concludes that the creep properties/life of a ferritic steel can be reasonably deduced from the quantification of systematic crept fractographs when the material microstructure is known.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Arpan Das
Summary: The fractal dimensions of material defects growing during fatigue process have been assessed experimentally in three different Zr-Nb alloys. The relationship between these fractal dimensions and the corresponding low cycle fatigue responses has been revealed. The invasive fractal character and chaos of crack/striations' islands and tearing ridge network morphologies after fatigue-fracture have been convincingly revealed.
PHILOSOPHICAL MAGAZINE
(2023)
Article
Metallurgy & Metallurgical Engineering
Arpan Das, Saurav Sunil, Rajeev Kapoor
METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS
(2019)
Article
Engineering, Multidisciplinary
Sicheng Jiao, Shixiang Wang, Minge Gao, Min Xu
Summary: This paper presents a non-contact method of thickness measurement for thin-walled rotary shell parts based on a chromatic confocal sensor. The method involves using a flip method to obtain surface profiles from both sides of the workpiece, measuring the decentration and tilt errors of the workpiece using a centering system, establishing a unified reference coordinate system, reconstructing the external and internal surface profiles, and calculating the thickness. Experimental results show that the method can accurately measure the thickness of a sapphire spherical shell workpiece and is consistent with measurements of other materials.
Article
Engineering, Multidisciplinary
Rajeev Kumar, Sajal Agarwal, Sarika Pal, Alka Verma, Yogendra Kumar Prajapati
Summary: This study evaluated the performance of a CaF2-Ag-MXene-based surface plasmon resonance (SPR) sensor at different wavelengths. The results showed that the sensor achieved the maximum sensitivity at a wavelength of 532 nm, and higher sensitivities were obtained at shorter wavelengths at the expense of detection accuracy.
Article
Engineering, Multidisciplinary
Attilio Di Nisio, Gregorio Andria, Francesco Adamo, Daniel Lotano, Filippo Attivissimo
Summary: Capacitive sensing is a widely used technique for a variety of applications, including avionics. However, current industry standard Capacitive Level Sensors (CLSs) used in helicopters perform poorly in terms of sensitivity and dynamic characteristics. In this study, novel geometries were explored and three prototypes were built and tested. Experimental validation showed that the new design featuring a helicoidal slit along the external electrode of the cylindrical probe improved sensitivity, response time, and linearity.
Article
Engineering, Multidisciplinary
Kai Yang, Huiqin Wang, Ke Wang, Fengchen Chen
Summary: This paper proposes an effective measurement method for dynamic compaction construction based on time series model, which enables real-time monitoring and measurement of anomalies and important construction parameters through simulating motion state transformation and running time estimation.
Article
Engineering, Multidisciplinary
Hui Fu, Qinghua Song, Jixiang Gong, Liping Jiang, Zhanqiang Liu, Qiang Luan, Hongsheng Wang
Summary: An automatic detection and pixel-level quantification model based on joint Mask R-CNN and TransUNet is developed to accurately evaluate microcrack damage on the grinding surfaces of engineering ceramics. The model is effectively trained on actual micrograph image dataset using a joint training strategy. The proposed model achieves reliable automatic detection and fine segmentation of microcracks, and a skeleton-based quantification model is also proposed to provide comprehensive and precise measurements of microcrack size.
Review
Engineering, Multidisciplinary
Sang Yeob Kim, Da Yun Kwon, Arum Jang, Young K. Ju, Jong-Sub Lee, Seungkwan Hong
Summary: This paper reviews the categorization and applications of UAV sensors in forensic engineering, with a focus on geotechnical, structural, and water infrastructure fields. It discusses the advantages and disadvantages of sensors with different wavelengths and addresses the challenges of current UAV technology and recommendations for further research in forensic engineering.
Article
Engineering, Multidisciplinary
Anton Nunez-Seoane, Joaquin Martinez-Sanchez, Erik Rua, Pedro Arias
Summary: This article compares the use of Mobile Laser Scanners (MLS) and Aerial Laser Scanners (ALS) for digitizing the road environment and detecting road slopes. The study found that ALS data and its corresponding algorithm achieved better detection and delimitation results compared to MLS. Measuring the road from a terrestrial perspective negatively impacted the detection process, while an aerial perspective allowed for scanning of the entire slope structure.
Article
Engineering, Multidisciplinary
Nur Luqman Saleh, Aduwati Sali, Raja Syamsul Azmir Raja Abdullah, Sharifah M. Syed Ahmad, Jiun Terng Liew, Fazirulhisyam Hashim, Fairuz Abdullah, Nur Emileen Abdul Rashid
Summary: This study introduces an enhanced signal processing scheme for detecting mouth-click signals used by blind individuals. By utilizing additional band-pass filtering and other steps, the detection accuracy is improved. Experimental results using artificial signal data showed a 100% success rate in detecting obstacles. The emerging concepts in this research are expected to benefit radar and sonar system applications.
Article
Engineering, Multidisciplinary
Jiqiang Tang, Shengjie Qiu, Lu Zhang, Jinji Sun, Xinxiu Zhou
Summary: This paper studies the magnetic noise level of a compact high-performance magnetically shielded room (MSR) under different operational conditions and establishes a quantitative model for magnetic noise calculation. Verification experiments show the effectiveness of the proposed method.
Review
Engineering, Multidisciplinary
Krzysztof Bartnik, Marcin Koba, Mateusz Smietana
Summary: The demand for miniaturized sensors in the biomedical industry is increasing, and optical fiber sensors (OFSs) are gaining popularity due to their small size, flexibility, and biocompatibility. This study reviews various OFS designs tested in vivo and identifies future perspectives and challenges for OFS technology development from a user perspective.
Article
Engineering, Multidisciplinary
Yue Wang, Lei Zhou, Zihao Li, Jun Wang, Xuangou Wu, Xiangjun Wang, Lei Hu
Summary: This paper presents a 3-D reconstruction method for dynamic stereo vision of metal surface based on line structured light, overcoming the limitation of the measurement range of static stereo vision. The proposed method uses joint calibration and global optimization to accurately reconstruct the 3-D coordinates of the line structured light fringe, improving the reconstruction accuracy.
Article
Engineering, Multidisciplinary
Jaafar Alsalaet
Summary: Order tracking analysis is an effective tool for machinery fault diagnosis and operational modal analysis. This study presents a new formulation for the data equation of the second-generation Vold-Kalman filter, using separated cosine and sine kernels to minimize error and provide smoother envelopes. The proposed method achieves high accuracy even with small weighting factors.
Article
Engineering, Multidisciplinary
Tonglei Cao, Kechen Song, Likun Xu, Hu Feng, Yunhui Yan, Jingbo Guo
Summary: This study constructs a high-resolution dataset for surface defects in ceramic tiles and addresses the scale and quantity differences in defect distribution. An improved approach is proposed by introducing a content-aware feature recombination method and a dynamic attention mechanism. Experimental results demonstrate the superior accuracy and efficiency of the proposed method.
Article
Engineering, Multidisciplinary
Qinghong Fu, Yunxi Lou, Jianghui Deng, Xin Qiu, Xianhua Chen
Summary: Measurement and quantitative characterization of aging-induced gradient properties is crucial for accurate analysis and design of asphalt pavement. This research proposes the composite specimen method to obtain asphalt binders at different depths within the mixture and uses dynamic shear rheometer tests to measure aging-induced gradient properties and reveal internal mechanisms. G* master curves are constructed to investigate gradient aging effects in a wide range. The study finds that the composite specimen method can effectively restore the boundary conditions and that it is feasible to study gradient aging characteristics within the asphalt mixture. The study also observes variations in G* and delta values and the depth range of gradient aging effects for different aging levels.
Article
Engineering, Multidisciplinary
Min Li, Kai Wei, Tianhe Xu, Yali Shi, Dixing Wang
Summary: Due to the limitations of ground monitoring stations in China for the BDS, the accuracy of BDS Medium Earth Orbit (MEO) satellite orbits can be influenced. To overcome this, low Earth orbit (LEO) satellites can be used as additional monitoring stations. In this study, data from two LEO satellites were collected to improve the precise orbit determination of the BDS. By comparing the results with GPS and BDS-2/3 solutions, it was found that including the LEO satellites significantly improved the accuracy of GPS and BDS-2/3 orbits.
