Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Nobuyoshi Ohno"'
Publikováno v:
Tribology Online, Vol 3, Iss 2, Pp 86-89 (2008)
The pressure-viscosity coefficient α is one of the most important property for EHL condition, however its measurement has difficulty. Therefore authors attempt to predict α for blend oils by using the relationship between pressure-viscosity coeffic
Externí odkaz:
https://doaj.org/article/6acb8fd4858d434b85ccd992e89887cf
Publikováno v:
Tribology Online, Vol 3, Iss 2, Pp 90-93 (2008)
This study investigates about the characteristic of the thermo-reversible gel-lubricant (TR Gel-Lube) under elastohydrodynamic lubrication (EHL) conditions. TR Gel-Lube is the lubricant, which consists of base fluid and a gel agent. TR Gel-Lube is re
Externí odkaz:
https://doaj.org/article/79b6f9417d6b4653b8969105313595df
Autor:
Sobahan Mia, Hidekazu Komiya, Shinichiro Hayashi, Shigeki Morita, Nobuyoshi Ohno, Shingo Obara
Publikováno v:
Tribology Online, Vol 2, Iss 2, Pp 54-58 (2007)
An unbranched perfluoropolyether (PFPE) 815Z is the current ball bearing lubricant for space applications. Measurements of elastohydrodynamic lubrication (EHL) oil film thickness have been carried out to assess the lubricating performance of PFPE wit
Externí odkaz:
https://doaj.org/article/b3caffdd3229434d882372474a275275
Publikováno v:
Tribology Letters. 51:273-280
Environment-friendly lubricant is the key demand in twenty-first century for the issue of global climate change. Vegetable oils as base oil for lubricants and biodiesel fuel are environmentally preferable to petroleum. They are usually excellent boun
Publikováno v:
Tribology Transactions. 56:561-571
Four multiply alkylated cyclopentane (MAC)-based greases, used for space applications, were used for rolling contact fatigue tests employing thrust ball bearings. These greases were R2000, ML, MU, ...
Publikováno v:
Materials Science Forum. :1233-1236
This paper describes the fatigue crack propagation behavior of extruded AZ31B magnesium alloys (average grain size: approximately 15 and 119 μm, respectively). Fatigue crack propagation tests were performed on center cracked tension (CCT) specimens
Autor:
Kentaro Sonoda, Sobahan Mia, Shigeki Morita, Nobuyoshi Ohno, Shingo Obara, Hiroshi Shiomi, Hiroyuki Tsuchida
Publikováno v:
Tribology Transactions. 54:859-866
Four series of rolling-element bearing fatigue tests were conducted with 51104 size thrust ball bearings with three balls made from SUJ2 (AISI 52100) steel lubricated with two advanced synthetic base oils used for space applications. The test lubrica
Publikováno v:
Tribology International. 44:751-755
High-pressure rheology of lubricating oil was determined using different experiments, and the phase diagram was drawn. The four-ball wear tests were used to evaluate anti-wear characteristics of oils in boundary lubrication condition. The bridged rin
Autor:
Yoshitaka Tamura, Yuji Shitara, Kentaro Sonoda, Sobahan Mia, Yuji Yamashita, Shigeki Morita, Nobuyoshi Ohno, Kazuo Masuhara
Publikováno v:
Tribology Transactions. 53:722-730
The tribological properties of a new and unique thermoreversible gel lubricant (TR gel lube) were investigated. TR gel lube, which includes 10–40% of amide-type gelling agent in base fluid, is able to repeatedly alter or convert phase from gel stat
Publikováno v:
Transactions of Nonferrous Metals Society of China. 20:s523-s526
Fatigue strength, crack initiation and propagation behavior of rolled AZ31B magnesium alloy plate were investigated. Axial tension−compression fatigue tests were carried out with cylindrical smooth specimens. Two types of specimens were machined wi