The “Practice Relevant Pitting Test”—A New Improved Test Method to Evaluate the Influence of Lubricants on the Pitting Load Capacity of Case Carburized Gears

2009 ◽  
pp. 57-57-9
Author(s):  
B. -R. Höhn ◽  
P. Oster ◽  
T. Radev ◽  
T. Tobie
Keyword(s):  
Load Capacity ◽  
Test Method

Experimental Study on the Static and Dynamic Characteristics of Screw Grooved Seals

1988 ◽  
Vol 110 (3) ◽  
pp. 326-331 ◽  
Author(s):  
H. Kanki ◽  
T. Kawakami
Keyword(s):  
Dynamic Characteristics ◽  
Load Capacity ◽  
Experimental Studies ◽  
Test Method ◽  
Test Facility ◽  
Test Results ◽  
Heavy Duty ◽  
Static And Dynamic Characteristics ◽  
Basic Characteristics ◽  
Annular Seals

Screw grooved annular seals are used in many heavy duty pumps such as boiler feed pumps. These annular seals have a significant effect on rotordynamic characteristics of the pumps. Studies on the dynamic characteristics of plain and circumferentially grooved annular seals have been published by many researchers. However, published works on screw grooved seals are few, and pump designers have not fully recognized the basic characteristics of screw grooved seals. Extensive experimental studies have been conducted for determining the basic characteristics of screw grooved seals. The leakage characteristics, load capacity, and dynamic characteristics for rotordynamic analysis were determined by using a specially designed test facility and test method. The test results were compared to the results of plain seals [3] and the basic differences were extracted for effective application of screw grooved seals.

scholarly journals Performance of Withdrawal Capacity for Mengkulang Glulam Perpendicular to the Glue Line for 14mm and 20mm Bolt Diameter

2020 ◽  
Vol 9 (3) ◽  
pp. 2825-2829
Keyword(s):  
Load Capacity ◽  
Test Method ◽  
Timber Species ◽  
Yield Model ◽  
Concrete Material ◽  
Plane Normal ◽  
Glued Laminated Timber ◽  
Load Carrying ◽  
Mechanical Fastener ◽  
Bolt Diameter

Withdrawal capacity is defined as the amount of resistance to withdrawal force in a plane normal to the surface panel. It is caused by density and internal bonding of the panel. Withdrawal capacity is one of the factors that affect the load carrying capacity of the timber connection apart from embedment strength and fastener yield moment. The European Yield Model (EYM) theory is used to predict the load capacity of the timber connection under lateral load. The sample panel is made of Glued Laminated Timber (Glulam) using Mengkulang timber species. Although Mengkulang Glulam has a good weight to strength ratio as compared to typical concrete material but it is still not widely used in Malaysia. This is mainly due to a very limited exposure on the Mengkulang Glulam usage. Withdrawal capacity is determined according to the ASTM D1761-12 using one-hole test method. Also, the ASTM D1761-12, EC5:2008 is used to determine the withdrawal capacity output. In this experiment a mechanical fastener, bolt; 14mm and 20mm were used to fix the sample panels onto the test jig. The bolt diameter influenced the withdrawal capacity. It was observed that the withdrawal capacity of 20mm bolt diameter was better than the 14mm diameter with an increment of 48.6%.

Tribology Testing of Advanced Aviation Oils, Bearing and Gear Materials

2005 ◽  
Author(s):  
L. D. Wedeven ◽  
W. F. Black ◽  
D. J. Carlisle
Keyword(s):  
Boundary Lubrication ◽  
Stainless Steels ◽  
Load Capacity ◽  
Bearing Steel ◽  
Test Method ◽  
Screening Tests ◽  
Turbine Engine ◽  
Engine Oils ◽  
Gear Steels ◽  
Film Lubrication

Long standing demands of advanced gas turbine engine oils to operate with increasing temperatures have resulted in formulations with reduced boundary lubrication. The desire to introduce corrosion resistance bearing and gear steels with more chemically benign surfaces compared to conventional steels presents significant challenges for boundary lubrication. A scuffing load capacity test method highlights oil and bearing steel response to mixed-film lubrication and wear. Through traction measurements the test method differentiates additive type and concentration with respect to wear and scuffing performance. The introduction of stainless steels 440C and Pyrowear 675 significantly reduces scuffing performance compared to conventional M50 bearing steel. The scuffing load capacity screening tests with advanced additive candidates show feasibility to significantly increase tribology performance with stainless steels.

scholarly journals Study on power load adjustment capacity of a 300MW cogeneration unit in heating season

2021 ◽  
Vol 329 ◽  
pp. 01006
Author(s):  
Jinxu Lao ◽  
Wei Zheng ◽  
Lingkai Zhu ◽  
Junshan Guo ◽  
haizhen Lv
Keyword(s):  
Power Generation ◽  
Load Capacity ◽  
Power Grid ◽  
Operation Mode ◽  
Test Method ◽  
Heating Season ◽  
Peak Shaving ◽  
Power Load ◽  
New Energy ◽  
Installed Capacity

After the formulation of the "3060" double carbon target, the installed capacity of new energy has increased rapidly and the proportion of power generation has become higher and higher. In the heating season, under the operation mode of "determining electricity by heat" of cogeneration units, in order to meet the consumption of renewable energy and the heating guarantee of people's livelihood, the contradiction with power grid peak shaving is increasing. This paper mainly introduces the load capacity of a 300MW cogeneration unit in the heating season. Through the test method, find out the load capacity of the unit under different heating capacity, which can be used as a reference for power generation enterprises and power grid dispatching.

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