Results 31 to 40 of about 1,860 (260)

Energy characteristics and mechanical properties of cyclotrimethylenetrinitramine (RDX)-based insensitive high-energy propellant

Journal of Materials Research and Technology, 2020
In order to improve the energy performance and mechanical properties of insensitive high-energy propellants, cyclotrimethylenetrinitramine (RDX)-based insensitive high-energy propellant with nitrocellulose (NC) and glycidyl azide polymer-energetic ...
Taixin Liang, Yankang Zhang, Zhongliang Ma, Maolin Guo, Zhongliang Xiao, Jiaoxia Zhang, Mengyao Dong, Jincheng Fan, Zhanhu Guo, Chuntai Liu   +9 more
doaj   +1 more source

Combustion Characteristics of Nanoaluminium-Based Composite Solid Propellants: An Overview

Journal of Chemistry, 2021
The nanosized powders have gained attention to produce materials exhibiting novel properties and for developing advanced technologies as well.
Kandasamy Jayaraman, Ponnurengam Malliappan Sivakumar, Ali Zarrabi, R. Sivakumar, S. Jeyakumar   +4 more
doaj   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

Advanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du, Takahiro Kaneko, Xinyu Yan, Takahito Ohmura, Kyosuke Yoshimi   +4 more
wiley   +1 more source

Research progress in data-driven constitutive modeling of composite solid propellants

AIP Advances
With the continuous advancement of technology, composite solid propellants play an increasingly widespread and crucial role in fields such as aerospace and military applications.
Bin Yuan, Hongfu Qiang, Chunguo Yue
doaj   +1 more source

Recent progress on transition metal oxides and carbon-supported transition metal oxides as catalysts for thermal decomposition of ammonium perchlorate

Defence Technology, 2021
As a main oxidizer in solid composite propellants, ammonium perchlorate (AP) plays an important role because its thermal decomposition behavior has a direct influence on the characteristic of solid composite propellants.
Teng Chen, Yi-wen Hu, Cai Zhang, Zhao-jian Gao   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Dynamic Regime of Ignition of Solid Propellant [PDF]

MATEC Web of Conferences, 2016
This article presents a dynamic regime of exposure of the radiant flux on the sample of gun-cotton. Obtained time the ignition of gun-cotton in the heating conditions of increasing heat flux in the range from 0.2 W/cm2 to 22 W/cm2. A comparison of the delay times of the ignition when heated variable and constant heat flux.
Zolotorev, Nikolay N., Kuznetsov, Valeriy T., Maslov, Eugene A.   +2 more
openaire   +4 more sources

External and Internal Cracking Caused by Heat Treatment in Laser Powder Bed Fusion‐Fabricated Inconel 738LC Components

Advanced Engineering Materials, EarlyView.
Manufacturing problems such as heat treatment‐induced cracking hinder the widespread application of the laser powder bed fusion (LPBF) process to superalloys. In this study, cracks in the LPBF components of Inconel 738LC superalloy are characterized after heat treatment at various temperature ranges, revealing two distinct cracking behaviors.
Kosuke Kuwabara, Masahiro Kusano, Ayako Ikeda, Toshio Osada, Makoto Watanabe   +4 more
wiley   +1 more source

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source

First applications of ultrasound technology in solid rocket propellant combustion promotion

Ultrasonics Sonochemistry
The regulation of propellant combustion using ultrasonic waves is proposed. Under ultrasonic frequencies of 25–40 kHz, we systematically examined the combustion characteristics of Al particles, ammonium perchlorate (AP)/hydroxyl-terminated polybutadiene (
Zhan Wen, Heng Jing, Feng Hao, Yuheng Wang, Bicheng Kuang, Peijin Liu, Wen Ao   +6 more
doaj   +1 more source