Results 91 to 100 of about 46,952 (306)

Development of rotary table grinding machine for large diameter Si wafers (1st report: Performance investigation of water hydrostatic rotary table)

Nihon Kikai Gakkai ronbunshu, 2016
Increasing of Si wafer diameter from φ300 mm to φ450 mm is required to enhance productivity of semiconductor devices. The authors developed a high stiff rotary grinding machine, which consists of a rotary table system and a wheel spindle system.
Jumpei KUSUYAMA, Ayumu HONDA, Takayuki KITAJIMA, Go OKAHATA, Akinori YUI, Toshihiro ITO, A. H. SLOCUM   +6 more
doaj   +1 more source

Areas of Seal R/D at GE [PDF]

, 1991
About four years ago, work was completed on a 36 inch diameter gas to gas carbon ring seal used to buffer low pressure turbine air at the rim of the forward outer flowpath on the GE36 unducted fan (UDF) engine.
Pope, A. Nelson
core   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

An Experimental Study on the Influence of Spring Support Structures and Hydrostatic Recess Areas on the Characteristics of Hybrid Tilting Pad Bearings Lubricated by High-Pressure CO₂

Lubricants
The purpose of this study is to explore the influence of different spring support structures and hydrostatic recess areas on the characteristics of hybrid tilting pad bearings lubricated by high-pressure CO2 to promote the development of high-pressure ...
Xiangyu Li, Lingfeng Huang, Shuxiang Yi, Xiaojing Wang, Xiaohan Zhang, Kunpeng Cheng   +5 more
doaj   +1 more source

Study of membrane restrictors in hydrostatic bearing

Advances in Mechanical Engineering, 2018
Hydrostatic guides or bearings are very important crucial components in precision mechanical system. First, the article selects the structural parameters of the standard design film restrictor with regard to hydrostatic bearing.
Dyi-Cheng Chen, Ming-Fei Chen, Chih-Hsuan Pan, Jun-Yan Pan   +3 more
doaj   +1 more source

Asymmetric Supply Type Hydrostatic Journal Gas Bearings to Support Large Load Rotors

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
Rotating machinerys have problems at bearings to support a rotor such as seismic ACROSS transmitters. The ACROSS ( Accurately Controlled Routinely Operated Signal System ) is a new technical method to detect subtle changes in the physical state of Earth ...
Tomohiko ISE, Hiroshi MIYATAKE, Toshihiko ASAMI   +2 more
doaj   +1 more source

Pressure distribution in a hydrostatic bearing of multi-wells [PDF]

Pressure distribution in hydrostatic bearing of multi-wells obtained by use of Navier-Stokes ...
Barondess, S. M., Phillips, H. P., Utku, S.   +2 more
core   +1 more source

The Maximum Flux of Star-Forming Galaxies [PDF]

, 2018
The importance of radiation pressure feedback in galaxy formation has been extensively debated over the last decade. The regime of greatest uncertainty is in the most actively star-forming galaxies, where large dust columns can potentially produce a dust-
Clutterbuck, Julie, Crocker, Roland M., Krumholz, Mark R., Thompson, Todd A.   +3 more
core   +2 more sources

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Resilient bearing supports are gas controlled [PDF]

, 1967
Self-acting, partial-arc, pivoted-pad bearings in which the bearing-to-journal applied load is pneumatically controlled are used in the operation of a radial flow gas generator where shaft speeds are on the order of 38,500 ...
Six, L. D.
core   +1 more source