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15 Results Found

  • Article
  • Open Access
12 Citations
3,252 Views
12 Pages

23 July 2021

The use of modern synthetic materials is an important element in the development of railway tracks. Their use is a response to the growing requirements regarding the durability of structures and environmental protection against traffic noise and vibr...

  • Article
  • Open Access
19 Citations
2,293 Views
17 Pages

Mechanical Properties and Failure Mechanism of Anchored Bedding Rock Material under Impact Loading

  • Yunhao Wu,
  • Xuesheng Liu,
  • Yunliang Tan,
  • Qing Ma,
  • Deyuan Fan,
  • Mingjie Yang,
  • Xin Wang and
  • Guoqing Li

21 September 2022

In view of the problem that anchored bedding rock material is prone to instability and failure under impact loading in the process of deep coal mining, and taking the lower roadway of a deep 2424 coal working face in the Suncun coal mine as the engin...

  • Feature Paper
  • Article
  • Open Access
4 Citations
2,216 Views
22 Pages

11 September 2020

With a Euler–Euler (E2P) approach, a mathematical model for predicting the pointwise hydrodynamic behavior of a spouted bed was implemented though computational fluid dynamics (CFD) techniques. The model considered a bed elasticity approach in...

  • Article
  • Open Access
6 Citations
2,690 Views
18 Pages

25 December 2020

In order to investigate the vibration characteristics of a composite sleeper-ballasted track and provide a basis for further popularization, a vehicle–track dynamic coupling model is established and the viscoelastic properties of the composite...

  • Article
  • Open Access
9 Citations
5,347 Views
16 Pages

The Young’s Modulus and Poisson’s Ratio of Hard Coals in Laboratory Tests

  • Mirosława Bukowska,
  • Piotr Kasza,
  • Rafał Moska and
  • Janusz Jureczka

28 March 2022

The Young’s modulus and Poisson’s ratio, parameters reflecting the elastic response of a rock to stress, are the key parameters used in many engineering activities, such as hard coal mining and natural gas extraction. The objective of thi...

  • Article
  • Open Access
26 Citations
3,623 Views
18 Pages

Experimental Modal Analysis and Characterization of Additively Manufactured Polymers

  • Hieu Tri Nguyen,
  • Kelly Crittenden,
  • Leland Weiss and
  • Hamzeh Bardaweel

19 May 2022

Modern 3D printed components are finding applications in dynamic structures. These structures are often subject to dynamic loadings. To date, research has mostly focused on investigating the mechanical properties of these 3D printed structures with m...

  • Article
  • Open Access
58 Citations
6,904 Views
22 Pages

Rheological Behavior and Dynamic Mechanical Properties for Interpretation of Layer Adhesion in FDM 3D Printing

  • Supaphorn Thumsorn,
  • Wattanachai Prasong,
  • Takashi Kurose,
  • Akira Ishigami,
  • Yutaka Kobayashi and
  • Hiroshi Ito

3 July 2022

Commercial filaments of poly(lactic acid) (PLA) composites with particulate filler, carbon fiber, and copper powder with different contents were fabricated by FDM 3D printing in XZ-direction at bed temperatures of 45 °C and 60 °C. The effects...

  • Article
  • Open Access
2 Citations
3,375 Views
16 Pages

12 October 2022

The stress-distribution angle is an important parameter for the design of retaining walls and foundation beds and has a non-negligible role in the rationality of engineering design. There is a lack of research on stress distribution in reinforced ear...

  • Article
  • Open Access
21 Citations
3,508 Views
14 Pages

2 December 2022

We compare different lattice structures with various elementary cell sizes built by laser powder bed fusion with and without hot isostatic pressing as post treatment. Cylindrical lattice structures are mechanically tested upon static and dynamic load...

  • Article
  • Open Access
1,271 Views
22 Pages

27 August 2024

Accurately determining the natural frequency of coal-containing geological structures is crucial for preventing mine dynamic disasters and utilizing vibration waves to break coal and enhance its permeability. Based on the modal theory of rock, vibrat...

  • Article
  • Open Access
13 Citations
4,928 Views
18 Pages

Effect of Lattice Structure on Mechanical Properties of Ti-6Al-4V-Ta Alloy for Improved Antibacterial Properties

  • Anel Zhumabekova,
  • Malika Toleubekova,
  • Tri Thanh Pham,
  • Didier Talamona and
  • Asma Perveen

This study investigates the effect of a tantalum addition and lattice structure design on the mechanical and antibacterial properties of Ti-6Al-4V alloys. TPMS lattice structures, such as Diamond, Gyroid, and Primitive, were generated by MSLattice 1....

  • Article
  • Open Access
1 Citations
662 Views
16 Pages

Design and Comparative Numerical Analysis of AlSi10Mg PBF-LB/M Manufactured TPMS Lattice Structures for Improved Mechanical Performance

  • Laura Luran Sun,
  • Nikola Milenkovski,
  • Kartikay Awasthi,
  • Xuan Bach Nghiem,
  • Nicola Mongelli,
  • Eckhard Kirchner and
  • Christian Mittelstedt

28 October 2025

Additive manufacturing enables the fabrication of lightweight structures with complex geometries, offering significant potential in aerospace and biomedical applications. Triply periodic minimal surface (TPMS) lattice structures are of particular int...

  • Article
  • Open Access
3 Citations
2,031 Views
22 Pages

28 June 2023

Polymeric composites such as Poly-ether-ether-ketone (PEEK)/carbon fiber (CF) have been widely utilized due to outstanding performances such as high specific strength and specific modulus. The PEEK/CF components via powder bed fusion additive manufac...

  • Article
  • Open Access
8 Citations
2,973 Views
14 Pages

Additive Manufacturing of Carbon Fiber Reinforced Epoxy Thermoset with Improved Thermomechanical Properties

  • Md Sahid Hassan,
  • Antonio Delgadillo,
  • Md Shahjahan Mahmud,
  • Joseph Munoz,
  • Saqlain Zaman,
  • Sofia Gabriela Gomez,
  • Cory Marquez,
  • Johnny C. Ho and
  • Yirong Lin

Laser Powder Bed Fusion (LPBF) is a widely used additive manufacturing technique for powder-based polymers and metallic materials. Thermoplastics like Polyamide 12 and Polyamide 6 are commonly used in LPBF; thermosetting polymers are gaining attentio...

  • Article
  • Open Access
60 Citations
5,777 Views
19 Pages

4D Printing of NiTi Auxetic Structure with Improved Ballistic Performance

  • Hany Hassanin,
  • Alessandro Abena,
  • Mahmoud Ahmed Elsayed and
  • Khamis Essa

31 July 2020

Auxetic structures have attracted attention in energy absorption applications owing to their improved shear modulus and enhanced resistance to indentation. On the other hand, four-dimensional (4D) printing is an emerging technology that is capable of...