Article
Multidisciplinary Sciences
Jasgurpreet Singh Chohan, Rupinder Singh, Kamaljit Singh Boparai
Summary: This study highlights the step-by-step procedure for controlling the density of master patterns/replicas after processing with VS for investment casting applications, aiming to address the issues of heat input and ash removal during burnout stage.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES
(2022)
Article
Polymer Science
Yu-Shan Zeng, Ming-Hsien Hsueh, Chao-Jung Lai, Te-Ching Hsiao, Chieh-Yu Pan, Wen-Chen Huang, Chih-Hao Chang, Shi-Hao Wang
Summary: This paper investigated the hardness property of PLA samples printed using fused deposition modeling (FDM) with different process parameters and raster angles. The hardness data were collected from the flat and edge surfaces of the samples. The effect of hardness after UV curing process was also analyzed. The results showed that the printing and raster angles had a significant impact on the hardness value of the PLA part, with a slight increase after UV irradiation. This study provides useful references for the application of FDM.
Article
Engineering, Manufacturing
Achyut Trivedi, Pavan Kumar Gurrala
Summary: In this study, copper electroless metallization was performed on additive manufactured specimens, and the effects of deposition temperatures, deposition times, and etching times were investigated. The electrical resistance measurements showed that higher deposition temperature and shorter deposition time resulted in increased conductivity and decreased electrical resistance. Weight measurements confirmed that longer etching time led to better removal of butadiene, creating more binding sites for metal atoms and improving copper metallization. Microscopic images also supported the findings that higher deposition temperature, longer etching time, and shorter deposition time exhibited better copper deposition.
MATERIALS AND MANUFACTURING PROCESSES
(2023)
Article
Mechanics
Parham Rezaeian, Majid R. Ayatollahi, A. Nabavi-Kivi, Nima Razavi
Summary: This paper investigates the influence of printing speed on the mechanical and fracture properties of FDM-ABS parts. The experimental results show that the specimens fabricated with a printing speed of 70 mm/s exhibit the best performance with the maximum elongation and fracture resistance. Furthermore, the failure mechanisms in the tensile specimens are observed using SEM and linked to the properties of the studied specimens.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Manufacturing
Ala'aldin Alafaghani, Muhammad Ali Ablat, Hossein Abedi, Ala Qattawi
Summary: Modeling the influence of FFF processing parameters on mechanical properties is complex, with interactions and non-linear effects being important factors. ANN outperformed DOE regression models in predicting mechanical properties, showing that parameters like layer thickness, infill pattern, and nozzle temperature significantly affect strength, stiffness, and ductility.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Automation & Control Systems
M. Hossein Sehhat, Ali Mahdianikhotbesara, Farzad Yadegari
Summary: Additive manufacturing (AM) can be used for space exploration to fabricate parts that can withstand extreme environmental conditions. This study evaluated the correlation between operational temperature and mechanical properties of AM fabricated parts. The results showed that temperature significantly affects tensile strength, while the type of material does not have significant influence.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Mohammad Hossein Bahrami, Mohammad Vahid Ehteshamfar, Hamed Adibi
Summary: Fused deposition modeling is a popular additive manufacturing technique known for its ability to quickly and inexpensively produce intricate parts. However, the low wear properties of the materials limit its application. To address this issue, Fe particles were added to ABS to create Fe-ABS composite filament, and parts were printed with varying parameters. The wear rate was evaluated through pin-on-disk tests, and it was found that the Fe percentage had the greatest impact on wear, followed by the filling pattern and nozzle temperature. Optimization was then carried out using a response surface methodology-based model and genetic algorithm with artificial neural network. The optimized result closely matched the experimental result with only a 0.25% error.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Fangfang Wang, Feixiang Luo, Yuanxin Huang, Xiaoshan Cao, Chao Yuan
Summary: This article proposes an efficient and economical 4D printing method that allows for prompt shape change under heat stimulus. By optimizing FDM processing parameters, complex 3D structures with flexibility and high fidelity can be directly constructed, significantly reducing construction time and process complexity.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Automation & Control Systems
Nishtha Hooda, Jasgurpreet Singh Chohan, Ruchika Gupta, Raman Kumar
Summary: In this study, artificial intelligence systems are integrated with mechanical systems to reduce manufacturing time and cost of products. The random forest machine learning model is used to predict and validate the optimum deposition angle in Fused Deposition Modeling, achieving a prediction accuracy of 94.57%, significantly better than other methods. This robust model efficiently predicts the optimum deposition angle for any geometry, enhancing the applicability of digitally manufactured products.
Article
Materials Science, Multidisciplinary
Raj Mohan, R. Venkatraman, S. Raghuraman
Summary: In this study, Fused Deposition Modeling (FDM) was used to process ABS polymer, with experiments revealing the significant impact of FDM input parameters such as infill percentage, layer height, and bed temperature on the density, surface roughness, and micro-hardness of ABS components. The individual and interaction effects of these parameters were observed, and a validation study was conducted to confirm the regression equation for all responses.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Polymer Science
Min Jae Park, Jaehoon Bae, Young K. Ju
Summary: This paper introduces a new type of 3D-printed curtain wall structure that uses a high-strength polymer panel for internal reinforcement, aiming to reduce production costs. The optimal model is selected through shape design and analysis, and the deformation of the structure is compared through testing at different wind speeds.
Article
Materials Science, Paper & Wood
Bruno Esteves, Sirri Sahin, Umit Ayata, Idalina Domingos, Jose Ferreira, Levent Gurleyen
Summary: Hardness is an important property of wood for various applications. Heat treatment was found to decrease the hardness of wood, with the magnitude of decrease depending on treatment time and temperature, and varying among different wood species. Additionally, analysis of variance tests revealed significant effects of wood species, heat treatment, and the interaction between both variables on wood hardness.
Article
Engineering, Mechanical
Mohd Nazri Ahmad, Mohamad Ridzwan Ishak, Mastura Mohammad Taha, Faizal Mustapha, Zulkiflle Leman
Summary: This paper investigates the mechanical and physical properties of a newly developed feedstock material for fused deposition modelling (FDM), which consists of acrylonitrile butadiene styrene (ABS) and oil palm fiber. The results show that increasing the fiber loading enhances the tensile strength and Young's modulus, but decreases the density and increases the porosity of the composite filament.
RAPID PROTOTYPING JOURNAL
(2023)
Article
Materials Science, Composites
Hammad Nadeem, Numan Ghazali, M. Nabeel, N. Ahsan, A. A. Khurram
Summary: The surface roughness of 3D printed parts with Fused Deposition Modelling (FDM) was evaluated using different materials and geometries. The roughness values were found to be higher in cube and cone samples compared to strip samples, regardless of the shape. The nozzle temperature was found to affect the surface roughness, and chemical and physical methods were used to improve the surface quality of FDM parts.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Materials Science, Characterization & Testing
Mehmet Kopar, Ali Riza Yildiz
Summary: This study characterizes the materials and assesses the mechanical features of PLA, PETG, and ABS materials generated at various raster angles. The strength ratios of the various materials have been found to fluctuate when the raster angles change.
Article
Engineering, Manufacturing
Smruti Ranjan Pradhan, Rupinder Singh, Sukhwant Singh Banwait, Satinder Singh, Arun Anand
Summary: This study presents a detailed methodology for fabricating dental crowns using fused filament fabrication (FFF) for veterinary patients. The study focuses on the assembly fit and dimensional accuracy of the crowns and proposes optimized FFF settings for achieving accurate sizes and surface hardness.
PROGRESS IN ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Rupinder Singh, Mohammad Mujahid Khan, Smruti Ranjan Pradhan, Vinay Kumar
Summary: This study investigates the failure analysis of meta-structure-inspired dual alloys printing and successfully prints functional prototypes of dual alloys with different processing parameters. Through porosity analysis and photomicrographic analysis, printing failures are analyzed in detail.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2023)
Article
Engineering, Mechanical
Rupinder Singh, Anish Das, Arun Anand
Summary: This study aims to design and fabricate a customized multi-rooted dental implant using direct-metal laser sintering technology. The 3D printed implant showed good stability and load-bearing capabilities, without the need for bone grafting, leading to improved primary and secondary stability through enhanced osseointegration.
RAPID PROTOTYPING JOURNAL
(2023)
Article
Engineering, Manufacturing
Kapil Chawla, Jaspreet Singh, Rupinder Singh
Summary: The feasibility of using fused filament fabrication (FFF) technique with composite filaments made from industrial wastes was investigated for the fabrication of non-structural components. The researchers utilized recycled ABS as the base matrix and used wood dust, Fe powder, and bakelite powder as reinforcements. By varying the printing parameters, they prepared multi-layered composite specimens with different characteristics. The optimization results showed that specific printing parameters yielded the best mechanical properties of the composite specimens.
PROGRESS IN ADDITIVE MANUFACTURING
(2023)
Article
Multidisciplinary Sciences
Minhaz Husain, Rupinder Singh, B. S. Pabla
Summary: Polyvinylidene fluoride (PVDF) composites are widely used for sensing applications in engineering, but their use in monitoring bone healing as an Internet of Bodies (IoB) solution is limited. This study 3D printed a PVDF composite with 90% PVDF, 8% hydroxyapatite (Hap), and 2% chitosan (CS) for sensing applications in veterinary patients. The composite sensor had a resonant frequency of 2.45 GHz and a return loss of -22.12 dB, making it suitable for IoB-based health monitoring. The specific absorption rate (SAR) of the sensors was also within the medical standard.
NATIONAL ACADEMY SCIENCE LETTERS-INDIA
(2023)
Article
Materials Science, Multidisciplinary
Abhishek Kumar, Kamaljit Singh Boparai, Jasgurpreet Singh Chohan, Rupinder Singh
Summary: In the past two decades, numerous studies have focused on process parametric optimisation of fused filament fabrication (FFF) for polylactic acid-based functional prototypes using design of experiment techniques. However, there is limited research on predicting mechanical and surface properties of FFF prints through machine learning (ML) and finite element analysis (FEA) methods. This study aims to investigate the impact of FFF parameters, such as layer thickness, infill structure, and infill density, on Young's modulus and surface roughness. The research involves evaluating optimal process parameters, developing an ML-based computational model for prediction, and correlating experimental and predicted values using FEA.
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Gulraj Singh, Gurinder Singh Brar, Rupinder Singh
Summary: There have been numerous studies on 3D printing short-range gun silencers using virgin ABS-based composite matrix, but little has been reported on improving their performance for a long service life. This study aims to enhance the mechanical and thermal properties of ABS-based composite silencers by reinforcing them with melamine formaldehyde (MF). The study successfully fabricates functional prototypes of secondary recycled ABS-MF composite and optimizes their mechanical properties. Infill density is found to be the most significant factor, and a zig-zag infill pattern with 100% infill density is determined to be the best combination for silencer applications.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Multidisciplinary Sciences
Ankush Mehta, Rupinder Singh, B. S. Pabla
Summary: Commercially dry cells pose a challenge for waste management, and PVDF recycling can contribute to urban mining. This study focuses on the tertiary recycling of PVDF from waste dry cells used in domestic applications. The recycled PVDF composite matrix shows potential for sensing applications based on its mechanical and dielectric properties.
NATIONAL ACADEMY SCIENCE LETTERS-INDIA
(2023)
Article
Multidisciplinary Sciences
Chahat Jain, Balwinder S. S. Dhaliwal, Rupinder Singh, Suman Pattnaik
Summary: This study fabricates flexible and wearable sensors using 1＆DEG recycled PVDF for body-centric communication (BCC) through fused filament fabrication. The results show that the sensors achieve 84.88% miniaturization in area at 2.45 GHz for Bluetooth communication, with a frequency shift of 51%. The validation demonstrates that the proposed sensor can be used for a bending radius up to 50 mm.
NATIONAL ACADEMY SCIENCE LETTERS-INDIA
(2023)
Article
Multidisciplinary Sciences
Ranvijay Kumar, Rupinder Singh
Summary: 3D printing of polylactic acid (PLA) is being used in orthopedic implants for reconstructing fractured and defective bone/tooth/muscles. PLA-based nanofibers (NFs) have been reported to improve cell adhesion/growth and mechanical properties. However, there are few studies on the fracture mechanism of 3D printed PLA composites sandwiched with PLA-NFs under flexural loading. These PLA composites are useful in canine orthopedic implants.
NATIONAL ACADEMY SCIENCE LETTERS-INDIA
(2023)
Article
Multidisciplinary Sciences
Rupinder Singh, Minhaz Husain, Sahil Mehra
Summary: This study demonstrates the 3D printing of metallic powder-based alloys and the fabrication of functionally graded implants with tunable properties. The results suggest that the dodecahedron-based meta-structure is more suitable for the fabrication of FGI.
NATIONAL ACADEMY SCIENCE LETTERS-INDIA
(2023)
Article
Engineering, Manufacturing
Ranvijay Kumar, Rupinder Singh
Summary: Electrospinning was used to produce nanofibers of polylactic acid (PLA) by adjusting the applied voltage, flow rate, and tip-to-collector distance. The finest nanofibers with a diameter of 144.0 ± 18.0 nm were prepared at 14 kV, 0.5 lL/s, and 16 cm TCD. The resonating frequency of 3.332 GHz confirmed the suitability of PLA-based nanofibers for bio-sensors in body-centric applications. The results of crystallinity, normalized heat, and glass transition temperature (Tg) supported the use of PLA-NF-based sensors in repeated thermal cycles.
MANUFACTURING LETTERS
(2023)
Article
Multidisciplinary Sciences
Chahat Jain, Balwinder S. Dhaliwal, Rupinder Singh, Suman Pattnaik
Summary: The 3D-printed MPA of 1 degrees recycled PVDF and ABS offers the possibility of developing greener sensors for various engineering applications.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Composites
Minhaz Husain, Rupinder Singh, Bs Pabla
Summary: This study investigates the torsional behavior of 3D-printed PVDF composite-based intramedullary pins. The results suggest that samples fabricated with specific process parameters show better torsional properties.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Multidisciplinary Sciences
Minhaz Husain, Rupinder Singh, B. S. Pabla
Summary: Virgin polyvinylidene fluoride (PVDF) is widely used in engineering and biomedical applications, and there is a need for scientific recycling solutions to achieve sustainable development goals. This study compares the properties of virgin and secondary recycled PVDF composites and finds that secondary recycled PVDF composites can be used for 3D printing of functional sensor prototypes, although the modulus of toughness is significantly reduced.
NATIONAL ACADEMY SCIENCE LETTERS-INDIA
(2023)
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.
