Results 131 to 140 of about 62,678 (311)

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 more
wiley   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

Advanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali, Magali Gregoire, Matys Guyard, Tatiana Itina, David Grojo, Pol Sopeña   +5 more
wiley   +1 more source

Studying the Ultrasonic Properties, DC Conductivity and Coefficient of Thermal Conductivity of PVA-Egg Shells Composites [PDF]

, 2013
The polymer composite used in the present study were made of polyvinyl alcohol (PVA) as a matrix and Iraqi egg shells as filler. Polymer composites were fabricated by mixing PVA with (5, 10, 15, 20, 25, 30, 40 and 50) wt.% of egg shells powder by using a
Hussien, Hani Mahmood
core   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

Advanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees, Timothy Harte, Bhagya Dharmasiri, Y. Athulya Wickramasingha, David J. Hayne, Daniel J. Eyckens, Luke C. Henderson   +6 more
wiley   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

Advanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow, Samya Sen, Joaquin Yus, Eliza E. Lovrich, Amanda G. Hoika, Kelly M. Chang, Arielle A. Pfeil, Nellie Haug, Amy J. Wagoner Johnson, Randy H. Ewoldt   +9 more
wiley   +1 more source

The influence of storing mineral wool on its thermal conductivity in an open space

Open Engineering
In engineering practice, a common problem is the lack of space on the construction site for the proper storage of building materials. The consequence of this is that building materials are stored in open spaces, where they are exposed to external ...
Noszczyk Paweł, Schabowicz Krzysztof, Tunkiewicz Maria   +2 more
doaj   +1 more source

On the Coefficient of Thermal Conductivity of the Boiler Scales in Water.

Transactions of the Japan Society of Mechanical Engineers, 1939
従耒熱傳導率測定には、定常傳導状態に於て、物体内を流れる熱量を測定して、熱傳導率を算出してゐるが、この方法では実験の際かなりの誤差を生じ易いから、筆者は不定常傳導状態に於て物体内部の温度上昇、又は下降を測定して、温度傳播率を求むる方法と、実験に當り誤差の少ない装置を考案して、温度傳播率を求め、比熱と密度とは別箇に測定して、計算により熱傳導率を求めた、本論文は次の事項を考究する。(1)物体を熱し又は冷却することに依て、不定常傳熱状態における物体中心の温度の変化を測定して、温度傳播率を算出するに適當なる算式k=(2・3026l2/π2t1)log mを誘導する。(2)熱源として、熱したる或は冷却したる水銀又は水等を使用し、この中に板状物体を浸して、不定常傳熱状態にある物体中心の温度の変化を測定する装置 ...
openaire   +2 more sources

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

System to Measure Thermal Conductivity and Seebeck Coefficient for Thermoelectrics [PDF]

, 2012
The Seebeck coefficient, when combined with thermal and electrical conductivity, is an essential property measurement for evaluating the potential performance of novel thermoelectric materials.
Park, Yeonjoon, King, Glen C., Kim, Hyun-Jung, Skuza, Jonathan R., Choi, Sang H., Nagavalli, Anita   +5 more
core   +1 more source

Analysis of Influential Factor on Drilling Rig Hydraulic Brake Disc based on Finite Element Method

Jixie chuandong, 2016
The finite element simulation model of transient temperature field of drilling rig hydraulic brake discs is built up. The thermal- mechanical coupling simulation and calculation of model is carried out by using ABAQUS.
Chen Bo, Li Chunfang
doaj