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Article
Evaluation of internal void related defects in reinforced concrete slab using electromagnetic wave properties
This study aims to develop a damage-detection algorithm based on the electromagnetic wave properties inside a reinforced concrete structure. The proposed method involves employing two algorithms based on data ...
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Article
CEO age and firm innovation: evidence from IT industry in Korea
This paper investigates the relationship between CEO age and firm innovation measured as innovation productivity (i.e., the number of patent applications) and innovation scope (i.e., technological proximity). ...
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Article
Sustainable production and degradation of plastics using microbes
Plastics are indispensable in everyday life and industry, but the environmental impact of plastic waste on ecosystems and human health is a huge concern. Microbial biotechnology offers sustainable routes to pl...
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Article
Modulated model predictive current control of HERIC AFE converter equipped with LCL filter
This paper proposes a modulated model predictive control (MMPC) of a highly efficient and reliable inverter concept (HERIC) active front end (AFE) converter equipped with an LCL filter. The proposed method is ...
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Article
Cellular and subcellular localization of endogenous phospholipase D6 in seminiferous tubules of mouse testes
Phospholipase D6 (PLD6) plays pivotal roles in mitochondrial dynamics and spermatogenesis, but the cellular and subcellular localization of endogenous PLD6 in testis germ cells is poorly defined. We examined t...
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Article
Effect of Microstructural Features on the High-Cycle Fatigue Behavior of CoCrFeMnNi High-Entropy Alloys Deformed at Room and Cryogenic Temperatures
In this study, we examined the effect of deformation twins and dislocation cell structures on the fatigue properties of the CoCrFeMnNi high-entropy alloy using rotational bending fatigue tests. The dislocation...
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Article
Edge-Cracking Behavior of CoCrFeMnNi High-Entropy Alloy During Hot Rolling
This work investigated edge-cracking behavior of equiatomic CoCrFeMnNi high-entropy alloy during hot rolling at rolling temperatures 500 ≤ TR ≤ 1000 °C. Edge cracks did not form in the material rolled at 500 °C, ...
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Article
Open AccessTensile property improvement of TWIP-cored three-layer steel sheets fabricated by hot-roll-bonding with low-carbon steel or interstitial-free steel
TWIP-cored three-layer steel sheets were newly fabricated by hot rolling of TWIP steel sheet surrounded by low-carbon (LC) or interstitial-free (IF) steel sheets. TWIP/LC or TWIP/IF interfaces were well bonded...
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Article
Dynamic compressive properties obtained from a split Hopkinson pressure bar test of Boryeong shale
Dynamic compressive properties of a Boryeong shale were evaluated by using a split Hopkinson pressure bar, and were compared with those of a Hwangdeung granite which is a typical hard rock. The results indicat...
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Article
Bi-modal Structure of Copper via Room-Temperature Partial Recrystallization After Cryogenic Dynamic Compression
Pure copper was compressed at high strain rates (over ~3 × 103 s−1) under liquid nitrogen. This deformation resulted in bi-modal microstructures of ultrafine grains and abnormally grown micro grains, and in grea...
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Article
Adiabatic shear banding and cracking phenomena occurring during cold-forging simulation tests of plain carbon steel wire rods by using a split Hopkinson’s pressure bar
Adiabatic shear banding and cracking phenomena occurring during cold forging of plain carbon steel wire rods, whose carbon content was varied from 0.2 to 0.8 wt%, were analyzed by forging simulation test using...
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Article
Correlation of microstructure with tensile and crack tip opening displacement properties at low temperatures in API linepipe steels
The correlations of the microstructural factors with the tensile and crack tip opening displacement (CTOD) properties at −20 and −60 °C for three kinds of API linepipe steels were investigated. The C steel com...
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Article
Anisotropy of Dynamic Compressive Properties of Non-Heat-Treating Cold-Heading-Quality Steel Bars
In the current study, a non-heat-treating cold-heading-quality steel bar was fabricated by cold drawing of a rolled bar, and anisotropic mechanical properties of the as-rolled and cold-drawn bars were investig...
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Article
Effects of Dynamic Strain Hardening Exponent on Abnormal Cleavage Fracture Occurring During Drop Weight Tear Test of API X70 and X80 Linepipe Steels
In this study, drop weight tear tests (DWTT) were conducted on API X70 and X80 linepipe steels fabricated with various compositions and rolling and cooling conditions in order to correlate the strain hardening...
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Article
Correlation of Microstructure, Chip-Forming Properties, and Dynamic Torsional Properties in Free-Machining Steels
Four free-machining steels were fabricated by varying volume fractions of MnS and soft metal additives of Pb and Bi, and their microstructures, tensile properties, chip-forming properties, and dynamic torsiona...
