Results 71 to 80 of about 2,430,413 (334)

MESHING PERFORMANCE ANALYSIS OF FACE ROLLER ENVELOPING HOURGLASS WORM DIRVE

open access: yesJixie qiangdu, 2022
Based on the research of worm gear pair and double roller enveloping hourglass worm without backlash, a new type of worm drive with end roller enveloping is proposed.
WANG XuDong, LIU ZaiXin, LI LingYu
doaj  

Ski Cross World Cup: Which course obstacles lead to high risk of injury, and which allow for overtaking? Is it different for men and women?: A systematic video analysis of the 2021/22 World Cup season [PDF]

open access: yes, 2023
Masteroppgave - Norges idrettshøgskole, 2023Purpose: The purpose of this study was to assess the risk of injury and to investigate which obstacles (Direction Changes, Jumps, Rollers, Start Straight) lead to an increased risk of injury in World Cup Ski ...
Brusveen, Håkon Furuseth
core  

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Application of Thick Concrete Rolling Technology in Gaobei Water Conservancy Project of Han River

open access: yesRenmin Zhujiang, 2020
In order to increase the thickness of roller compacted concrete (RCC) from the conventional 30 cm to 50~60 cm,and improve the construction efficiency of RCC dams,this paper conducts the 50~60 cm concrete rolling compaction test by the first domestic ...
SHI Aijun   +6 more
doaj  

PERANCANGAN MESIN PENGGILING LIMBAH KACA SISTEM ROLL KAPASITAS 60 KG/JAM [PDF]

open access: yes, 2022
Kaca merupakan bahan yang tergolong sampah anorganik, yang berbahan dasar pasir silika yang dihasilkan melalui proses peleburan pada suhu 1400o C, kemudian dilakukan proses pemadatan dengan proses pendinginan, kaca memerlukan waktu 1 juta tahun untuk ...
Basjir, Mochammad   +2 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Kajian Kominusi Limestone Pada Area Penambangan PT. Semen Padang (Pesero) Tbk Bukit Karang Putih Indarung Sumatera Barat [PDF]

open access: yes, 2014
Kominusi merupakan tahapan pengolahan bahan galian yang dilakukan di PT. Semen Padang (Persero) Tbk. bertujuan untuk mereduksi limestone agar pengiriman material dari front penambangan menuju storage dengan menggunakan belt conveyor berjalan dengan baik.
Arief, T. (Taufik)   +2 more
core  

Wake behind a discontinuous cylinder: Unveiling the role of the large scales in wake growth and entrainment [PDF]

open access: yes, 2022
Un estudi de la literatura existent indica que hi ha una manca d'acord pel que fa al mecanisme d'arrossegament en la interfície turbulent/no-turbulent (TNTI) en fluxos lliures, amb diversos estudis que troben diferències en la importància relativa dels ...
Mandava, Venkata Subba Rao
core  

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

open access: yesAdvanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm   +5 more
wiley   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger   +2 more
wiley   +1 more source

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