نتایج جستجو برای: hardness testing

تعداد نتایج: 361813  

Journal: :Journal of the Japan Institute of Metals and Materials 1952

Journal: :international journal of iron & steel society of iran 2015
h. sharifi

zinc coating is formed by the heterogeneous assembly of the γ, γ1, δ, ζ and η phases whose mechanicalproperties greatly differ from each other. thermal strains resulting from large differences betweenthermal expansion coefficients are partially relaxed by the formation of a crack network. in order tomodel this phenomenon, initial hardness, thermal expansion coefficient αi and toughness (kic) of...

2018
Felix Tsui

Despite the potentially negative effects on play performance and safety, little is currently known about the spatial and temporal variability in the properties of artificial turf pitches. The primary purpose of this study was to quantify the spatial and temporal variations in surface hardness across a 5-year-old third-generation artificial turf pitch over full year cycle. The secondary purpose ...

2015
Spiros Zinelis Youssef S Al Jabbari Marianna Gaintantzopoulou George Eliades Theodore Eliades

BACKGROUND The aim of this study was the characterization of mechanical properties of representative types of orthodontic wires employing instrumented indentation testing (IIT) according to ISO 14577. METHODS Segments were cut from ten wires. The first six are made of stainless steel (SS), two are made of Ni-Ti, and the last two are made of titanium molybdenum alloys (TMA). Then, the Martens ...

2014
Peng-cheng Liu Yun-ji Yang Run Liu He-xi Shu Jin-peng Gong Yong Yang Qi Sun Xing Wu Ming Cai

PURPOSE The electron beam melting (EBM) Ti-6Al-4V material technology has been developed over a short time period. It was introduced through a research to develop Ti-6Al-4V implants for patients, but EBM printed locking compression plates have not been used for clinical implants. The main purpose of this study is to find whether the EBM Ti-6Al-4V plate suit for clinical implants. METHODS Firs...

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