Results 81 to 90 of about 28,396 (238)

Development of Nickel-Titanium Graded Composition Components [PDF]

, 2004
The potential of various manufacturing methods was evaluated for producing nickel-titanium graded composition material. The selected test case examined attachment brackets that join nickel-based metallic thermal protection systems to titanium-based ...
Baughman, J. M., Domack, M. S.
core   +1 more source

Low‐Cost Friction‐Based Force‐Limiting Connection With Reduced Sensitivity to Machining Tolerances and Accelerated Repairability

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This paper presents a novel yet practical friction‐based structural component design for low‐damage earthquake‐resistant structures. The proposed connection design is based on a conventional slotted‐bolted configuration with the novelty being the use of loose steel washer plates to establish the friction‐sliding interface.
Kaixin Chen, Georgios Tsampras, Chung‐Che Chou, Huang‐Zuo Lin, Chi‐Jeng Wu, Alvaro Córdova, Chia‐Ming Uang, Shih‐Ho Chao   +7 more
wiley   +1 more source

Ultrasonic Processing Across Different Phases in Laser Welding of Large Thin-Walled Structures

Medžiagotyra
In laser welding applications for large structures like oil storage tanks, ships, automobiles, and high-speed rail, effective post-weld heat treatment is challenging because the structures are large and cannot be disassembled. This results in significant
Haodong LIU, Dongsheng WANG, Changjun CHEN, Aiyong CUI, Bing WANG, Li HAN   +5 more
doaj   +1 more source

Advanced Welding Concepts [PDF]

, 2010
Four advanced welding techniques and their use in NASA are briefly reviewed in this poster presentation. The welding techniques reviewed are: Solid State Welding, Friction Stir Welding (FSW), Thermal Stir Welding (TSW) and Ultrasonic Stir ...
Ding, Robert J.
core   +1 more source

Experimental Factors and Techniques for Pool Boiling Heat Transfer Enhancement: A Critical Review

Heat Transfer, EarlyView.
ABSTRACT This review presents a comprehensive assessment of active strategies for enhancing pool boiling heat transfer, with a focus on techniques that do not rely solely on the boiling surface modification. It examines a broad range of methodologies including fluid additives, external fields, mechanical interventions, and thermal‐geometric tuning that
José E. Pereira, R. R. Souza, A. S. Moita   +2 more
wiley   +1 more source

Study on Pores in Ultrasonic‐Assisted TIG Weld of  Aluminum Alloy

Metals, 2017
Ultrasonic‐assisted tungsten inert gas welding was carried out on a thin plate of 2195 Al‐Li alloy, and the characteristics of the weld pores were analyzed in terms of their size and porosity.
Qihao Chen, Hongliang Ge, Chunli Yang, Sanbao Lin, Chenglei Fan   +4 more
doaj   +1 more source

Graphite composite truss welding and cap section forming subsystems. Volume 1: Executive summary [PDF]

A rolltrusion process was developed for forming of a hybrid, single-ply woven graphite and glass fiber cloth, impregnated with a polysulfone resin and coated with TI02 pigmented P-1700 resin into strips for the on-orbit fabrication of triangular truss ...

core   +1 more source

Solder‐free room‐temperature multichannel integration for soft hybrid electronics

InfoMat, EarlyView.
A room‐temperature direct interconnection (RTDI) technique enables solder‐free, stretchable bonding of multichannel soft–rigid interfaces via hydrogen bonding and molecular entanglement. It achieves 24.7× stronger mechanical bonding than conventional methods and maintains resistance variation within one order of magnitude at 110% strain.
Junchang Wang, Jie Cao, Dongzi Yang, Xuanyu Wang, Yue Zhang, Yan Chen, Mengyang Liu, Jie Qiu, Zhiwei Chen, Qian Xu, Xumeng Zhang, Xianzhe Chen, Chenxin Zhu, Ming Wang   +13 more
wiley   +1 more source

Occupational Exposure to Factory‐Derived Particulate Matter 2.5 Induces Cutaneous Toxicity in Workers and HaCaT Keratinocytes Through Oxidative Stress and Inflammation

Journal of Applied Toxicology, EarlyView.
ABSTRACT This study aimed to evaluate the toxicological effects of occupational exposure to factory‐derived particulate matter (PM2.5) on human skin, emphasizing its role as a potential target organ of environmental toxicants. An epidemiological survey comparing factory and nonfactory workers was conducted by assessing their skin elasticity and color ...
Miku Tanaka, Masayuki Takaishi, Iroha Okuda, Toshiki Fujimoto, Mayumi Tsuji, Yuri Okano, Yasuhiro Ishihara, Maori Kono   +7 more
wiley   +1 more source

Ultrasound influence on materials structure in parts reconditioned by welding with ultrasonic field

Metalurgija, 2013
Research presented in the paper refers to the structural analysis of materials that are thermally influenced for loading by welding of pieces in the classical variant of manual coated electric arc welding and the version that in which the welding bath is
D. Dobrotă, Gh. Amza
doaj