Results 31 to 40 of about 101,481 (337)

Coarse Grained Heat-Affected Zone Microstructure and Brittleness of Ti-Nb-B Microalloyed High Toughness and Wear Resistant Steel

Metals, 2019
The effects of B, Ti-Nb, and Ti-Nb-B microalloying on the microstructure and properties of the coarse grain heat affected zone (CGHAZ) of C-Mn-Si-Mo wear-resistant steel have been investigated by means of thermal simulation, mechanical property test ...
Defa Li, Kaiming Wu, Hangyu Dong, Oleg Isayev, Oleksandr Hress   +4 more
doaj   +1 more source

Effect of Coarse Aggregate Grading on Mechanical Parameters and Fracture Toughness of Limestone Concrete

Infrastructures, 2023
This work presents a discussion of the basic properties of broken mineral limestone aggregates with the specification of the properties affecting the fracture toughness of concretes made with these aggregates. To determine the influence of the grain-size
Grzegorz Ludwik Golewski
doaj   +1 more source

Analysis influence of Dmax on fracture mechanics parameters of concrete made of limestone aggregate at three point bending.

Budownictwo i Architektura, 2007
The analysis of concrete behaviour taking into account fracture mechanics method makes it possible to describe the origin and development of the damages occurring in it, which is impossible in case of using global strength characteristics of composite ...
Grzegorz Golewski
doaj   +1 more source

Examining of rock drilling properties in underground metal mine excavation [PDF]

Anais da Academia Brasileira de Ciências, 2021
In underground metal mines, drilling and blasting is widely used production method. Drilling holes is especially a time consuming operation. The aim of this study is to examine and analyze drilling operation and its duration in underground ore and dead ...
MUSTAFA EMRE YETKİN
doaj   +1 more source

Theoretical Investigations of a BN Polymorph with sp² + sp³ Hybridizations

Crystals, 2021
The crystal structure, mechanical anisotropy, elastic properties and electronic characteristics, as well as the stability, of P4/m BN are predicted by means of density functional theory.
Xinhai Yu, Riguge Su, Bei He, Binchang Ma   +3 more
doaj   +1 more source

Structural Mechanism of Performance Loss of Copper Coolers of Glass Production with Thermal Diffusion Protective Layer

Механика машин, механизмов и материалов, 2023
A general assessment of options for increasing the resistance of elements of heat-removing devices made of copper is carried out. The peculiarity of high-temperature corrosion destruction of thermal diffusion aluminum- containing protective layer on M1 ...
Valery M. Konstantinov, Ilya V. Pletenev, Vladimir G. Dashkevich, Mitrofan A. Sudnikov   +3 more
doaj   +1 more source

Brittle source identification method for ship power grid based on complex network

Zhongguo Jianchuan Yanjiu
ObjectiveExisting brittle source identification methods have such problems as their single-perspective approach, disregard for the local and global characteristics of nodes, and insufficient consideration of the loads carried by nodes.MethodsThe method ...
Xiao TIAN, Zhiquan LIU
doaj   +1 more source

Increased Mechanical Properties of Carbon Nanofiber Mats for Possible Medical Applications

Fibers, 2019
Carbon fibers belong to the materials of high interest in medical application due to their good mechanical properties and because they are chemically inert at room temperature.
Marah Trabelsi, Al Mamun, Michaela Klöcker, Lilia Sabantina, Christina Großerhode, Tomasz Blachowicz, Andrea Ehrmann   +6 more
doaj   +1 more source

Experimental investigation of cracking behaviors of ductile and brittle rock-like materials

Fracture and Structural Integrity, 2021
The cracking characteristics of ductile rocks were studied by similar materials with sand, barite, epoxide resin, polyamide, silicone rubber and alcohol, while the cracking characteristics of brittle rocks were investigated by similar material with sand,
Hao Bai, Wei Du, Yundong Shou, Lichuan Chen, Filippo Berto   +4 more
doaj   +1 more source

Remote Monitoring in Myasthenia Gravis: Exploring Symptom Variability

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Myasthenia gravis (MG) is a rare, autoimmune disorder characterized by fluctuating muscle weakness and potential life‐threatening crises. While continuous specialized care is essential, access barriers often delay timely interventions. To address this, we developed MyaLink, a telemedical platform for MG patients.
Maike Stein, Maximilian Mönch, Meret Herdick, Frauke Stascheit, Sarah Hoffmann, Hannah Preßler, Philipp Mergenthaler, Carla Dusemund, Paolo Doksani, Haoqi Sun, Pushpa Narayanaswami, Andreas Meisel, Lea Gerischer, Sophie Lehnerer   +13 more
wiley   +1 more source