Results 41 to 50 of about 993,746 (310)

Study on the Effect of Crack Density and Micro-Cracking Block Size of In Situ Softening Semi-Rigid Base

Buildings
Reflection cracking in semi-rigid bases is a widespread distress that undermines highway safety. Priority should be given to this issue to ensure the normal performance of large-scale semi-rigid base asphalt pavements that have reached the end of their ...
Liting Yu, Chunyang Yu, Haiqi He, Zikai Xu, Donliang Hu, Rui Li, Jianzhong Pei   +6 more
doaj   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Thermal Catalytic-Cracking Low-Density Polyethylene Waste by Metakaolin-Based Geopolymer NaA Microsphere

Molecules, 2022
Metakaolin-based geopolymer microspheres (MGM) with hierarchical pore structures were prepared by suspension dispersion method in dimethicone at 80 °C.
Shanshan Tang, Yan He, Xingfa Deng, Xuemin Cui   +3 more
doaj   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Cracking during thermal post-processing of laser powder bed fabricated CM247LC Ni-superalloy

Materials & Design, 2019
The causes of cracking during thermal post-processing of laser powder bed fabricated (LPBF) CM247LC Ni-superalloy have been examined. Micro-hardness measurements and microstructural analyses were undertaken following short aging heat treatments around ...
John H. Boswell, Daniel Clark, Wei Li, Moataz M. Attallah   +3 more
doaj   +1 more source

Mechanical behavior and failure mechanism of polyurea nanocomposites under quasi-static and dynamic compressive loading

Defence Technology, 2021
Polyurea is an elastomeric material that can be applied to enhance the protection ability of structures under blast and impact loading. In order to study the compressive mechanical properties of SiC/polyurea nanocomposites under quasi-static and dynamic ...
Qiang Liu, Peng-wan Chen, Yan-song Guo, Jian-jun Su, Lu Han, Ali Arab, Jian-fei Yuan   +6 more
doaj   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Twin-peak Frequencies of Acoustic Emission Due to the Fracture of Marble and Their Possible Mechanism

工程科学与技术, 2018
Acoustic emission (AE) is a transient emission of elastic energy due to the micro cracking of rock under loading and is widely used in the various tests of rock mechanics.
Jianhui DENG, Linrui LI, Fei CHEN, Jianfeng LIU, Jian YU   +4 more
doaj  

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

Advanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang, Adrian Ehrenhofer, Thomas Wallmersperger   +2 more
wiley   +1 more source

The Threshold of Micro Crack Propagation under Mixed Mode

Bulletin of JSME, 1985
In order to investigate the threshold condition of micro fatigue crack propagation under mixed mode, tests of cyclic plane bending, cyclic torsion and their combinations are carried out with a stress ratio R=-l. Annealed cracked specimens made of carbon steel are used in the tests.
KITAOKA, Seiichiro, CHEN, Jian-qiao, SEIKA, Masaichiro   +2 more
openaire   +3 more sources