Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Erwin V. Zaretsky"'
Publikováno v:
International Journal of Rotating Machinery, Vol 10, Iss 1, Pp 27-31 (2004)
Rotating, coated wiping rollers used in a high-speed printing application failed primarily from fatigue. Two coating materials were evaluated: a hard, cross-linked, plasticized polyvinyl chloride (PVC) and a softer, plasticized PVC. A total of 447 te
Externí odkaz:
https://doaj.org/article/a92b42900e35433db10dbb15f9150544
Publikováno v:
International Journal of Rotating Machinery, Vol 9, Iss 5, Pp 313-325 (2003)
The NASA Energy-Efficient Engine (E3-Engine) is used as the basis of a Weibull-based life and reliability analysis. Each component's life, and thus the engine's life, is defined by high-cycle fatigue or low-cycle fatigue. Knowing the cumulative life
Externí odkaz:
https://doaj.org/article/38959a14cb594834a64a38fa585e0d82
Autor:
Erwin V. Zaretsky, Pradeep Kumar Gupta
Publikováno v:
Tribology Transactions. 62:1129-1141
Based on experimental life data on silicon nitride balls, the stress-life exponent and life constant in the generalized ball life equation, developed earlier, are modified to better simulat...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf4ad03e967ea40990831945e6de6321
https://doi.org/10.1080/10402004.2019.1654052
https://doi.org/10.1080/10402004.2019.1654052
Publikováno v:
Journal of Tribology. 143
Static Load Capacity as defined by Palmgren is the load (stress) applied to a bearing that results in an indentation greater than 0.0001 times the diameter of the rolling element. The effect of hardness on the Static Load Capacity of AISI 52100 beari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cf66242ef39fdd37374ed058e33f6b9
https://doi.org/10.1115/1.4049598
https://doi.org/10.1115/1.4049598
Autor:
Pradeep Kumar Gupta, Erwin V. Zaretsky
Publikováno v:
Tribology Transactions. 61:304-324
New stress-based life models are introduced to define “dynamic stress capacity” in rolling bearings for the first time. The generalized stress capacity equations are formulated, for both point and line contacts, in terms of distinct geometrical a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94c4cd00a555fbb4f6444a5657ced0dd
https://doi.org/10.1080/10402004.2017.1319524
https://doi.org/10.1080/10402004.2017.1319524
Autor:
Emanuel V. Branzai, Erwin V. Zaretsky
Publikováno v:
Tribology Transactions. 60:300-312
In 1947 and 1952 G. Lundberg and A. Palmgren developed what is now referred to as the Lundberg-Palmgren model for rolling bearing life prediction based on classical rolling-element fatigue. Today, bearing fatigue probably accounts for less than 5% of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::959d5d1826b7ec4fa7349dca94cb7e00
https://doi.org/10.1080/10402004.2016.1163761
https://doi.org/10.1080/10402004.2016.1163761
Publikováno v:
Tribology Transactions. 58:1039-1053
Generalized formulations for dynamic capacity and life of ball bearings, based on the models introduced by Lundberg and Palmgren and Zaretsky, have been developed and implemented in the bearing dynamics computer code ADORE. Unlike the original Lundbe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3db7b99c3b127747b876bb6e0dc796f
https://doi.org/10.1080/10402004.2015.1038860
https://doi.org/10.1080/10402004.2015.1038860
Publikováno v:
Tribology Transactions. 58:786-800
In 1991, Needelman and Zaretsky presented a set of empirically derived equations for bearing fatigue life (adjustment) factors (LFs) as a function of oil filter ratings. These equations for life factors were incorporated into the reference book, "STL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2b5196866f0c323cb4a8bcedb05a31c
https://doi.org/10.1080/10402004.2015.1005857
https://doi.org/10.1080/10402004.2015.1005857
Publikováno v:
Tribology Transactions. 58:186-196
The U.S. Space Shuttle fleet was originally intended to have a life of 100 flights for each vehicle, lasting over a 10-year period, with minimal scheduled maintenance or inspection. The first space shuttle flight was that of the Space Shuttle Columbi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::240989796f93fb0e4456668fee3fa300
https://doi.org/10.1080/10402004.2014.956908
https://doi.org/10.1080/10402004.2014.956908
Publikováno v:
Tribology Transactions. 57:928-938
Cylindrical roller bearings typically employ roller profile modification to equalize the load distribution, minimize the stress concentration at roller ends, and allow for a small amount of misalignment. The 1947 Lundberg-Palmgren analysis reported a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::349815a76f7ff72328bffb203046eba0
https://doi.org/10.1080/10402004.2014.927545
https://doi.org/10.1080/10402004.2014.927545