Results 41 to 50 of about 343,034 (332)

The Prevention of Compressed-air Illness [PDF]

Journal of Hygiene, 1908
1. The time in which an animal or man exposed to compressed air becomes saturated with nitrogen varies in different parts of the body from a few minutes to several hours. The progress of saturation follows in general the line of a logarithmic curve and is approximately complete in about five hours in man and in a goat in about three hours.2.
J. S. Haldane, G. C. C. Damant, A. E. Boycott   +2 more
openaire   +3 more sources

Influence of Temperature on Scratch and Wear Properties of Technical Thermoplastics: Implications for Material Selection

Advanced Engineering Materials, EarlyView.
The share of technical thermoplastics is expected to grow further in the e‐mobility segment. In this study, a detailed temperature‐based tribological characterization of technical thermoplastics is performed. The tribological properties are discussed in terms of the dynamic mechanical properties of polymers at different ambient temperatures. A proof of
Harsha Raghuram, Thomas Koch, Vasiliki-Maria Archodoulaki   +2 more
wiley   +1 more source

X‐Ray Computed Tomography Quantifies Primary Phases and Reveals Crack Morphology in High‐Cycle Fatigue of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
Primary phases and a fatigue crack are studied in a forged blank of an aluminum alloy using synchrotron and laboratory X‐ray computed tomography. To image the crack, the fatigue test is interrupted, and a static tensile load is applied to open the crack.
Jakob Schröder, Ying Han, Tobias Fritsch, Bardia Hejazi, Alexander Ulbricht, Birgit Skrotzki, Giovanni Bruno   +6 more
wiley   +1 more source

Calculation and Experimental Study on Purging Resistance of the Spiral Tube Heat Exchanger

Zhongguo dianli, 2020
For the spiral tube heat exchanger with smaller diameter and more complex structure, using the conventional method is not an effective way to clean the inside of the tubes. In this paper, regarding the difficulties in cleaning the steam generator of high-
Junfeng LIU, Xiaolong MA, Kang LI, Guangjian CHEN, Yingjie ZHU, Xiqiang MA   +5 more
doaj   +1 more source

Mechanical Behavior and Microstructural Changes Associated with Tensile Deformation above the Martensite Start Temperature during Quenching and Subsequent Partitioning of a Low‐Alloy 37SiB6 Steel

Advanced Engineering Materials, EarlyView.
A new experimental setup, incorporating digital image correlation and infrared thermography in combination with inductive‐conductive heating for precise temperature control, is used to analyze the mechanical behavior and microstructural changes of sheet metal under complex thermomechanical test conditions that represent quench and partitioning ...
Christian Illgen, Benjamin Bohne, Sven Winter, Marcus Böhme, Martin F.-X. Wagner   +4 more
wiley   +1 more source

Plating by glass-bead peening [PDF]

, 1971
Technique permits plating of primarily metallic substrates with either metals or nonmetals at normal temperature. Peening uses compressed air to apply concurrent streams of small glass beads and powdered plating material to the ...
Babecki, A. J., Haehner, C. L.
core   +1 more source

A coupled thermo-hydro-mechanical model of jointed hard rock for compressed air energy storage [PDF]

, 2017
Renewable energy resources such as wind and solar are intermittent, which causes instability when being connected to utility grid of electricity. Compressed air energy storage (CAES) provides an economic and technical viable solution to this problem by ...
Huang, Runqiu, Liang, Chao, Rabczuk, Timon, Zhuang, Xiaoying   +3 more
core   +2 more sources

A smooth grid connection strategy for compressed air energy storage based on adaptive PI control

Frontiers in Energy Research
In the context of the application of compressed air energy storage system participating in power grid regulation, a large capacity of compressed air energy storage accessed to or off from the power grid will bring instability to the system, and there ...
Dajiang Wang, Yaxin Sun, Yaming Ge, Jie Li, Chaoyang Yan, Jianhui Meng   +5 more
doaj   +1 more source

Test of measurement device for the estimation of leakage flow rate in pneumatic pipeline systems

Measurement + Control, 2018
Background: Indirect measurements of flow rate serve to determine air consumption, leakage values and characteristics of compressed air systems (CASs).
Ryszard Dindorf, Piotr Wos
doaj   +1 more source

Residual Stress States in Microstructurally Graded PBF–LB/M Austenitic Steel Components

Advanced Engineering Materials, EarlyView.
This study examines microstructurally graded 316L rectangular tube profiles fabricated via PBF–LB/M using a dual‐laser system. A 1 kW top‐hat and a 400 W Gaussian laser create distinct grain sizes and crystallographic texture. Mechanical properties are linked to microstructural evolution driven by processing conditions.
Nico Möller, Florian Loebich, Thomas Wegener, Julia Richter, Jens Gibmeier, Thomas Niendorf   +5 more
wiley   +1 more source