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Fatigue Behaviour of LVL Subjected to Repeated Shear Stresses.

Norlin, Magnus (1996)
Division of Structural Engingeering
Civil Engineering (M.Sc.Eng.)
Abstract
The fatigue behavior of laminated veneer lumber (Douglas-fir) subjected to shearstress has been studied. The static shear strength of specimens, 37 by 102 by 406 mm was established through a three point bending test over a span of 305 mm. Four series of specimens were subjected to a cyclic load history with peak loads ranging from 95 to 80 percent of the static strength. The duration of each load cycle was approximately 32 seconds. A stress-level verses (log) number of cycles diagram was produced to show the fatigue behavior. The load-level was calculated from the static strength using the assumption of equal rank. A least square regression analysis was made and was found to fit the S-N data well. The lowest load-level tested in this... (More)
The fatigue behavior of laminated veneer lumber (Douglas-fir) subjected to shearstress has been studied. The static shear strength of specimens, 37 by 102 by 406 mm was established through a three point bending test over a span of 305 mm. Four series of specimens were subjected to a cyclic load history with peak loads ranging from 95 to 80 percent of the static strength. The duration of each load cycle was approximately 32 seconds. A stress-level verses (log) number of cycles diagram was produced to show the fatigue behavior. The load-level was calculated from the static strength using the assumption of equal rank. A least square regression analysis was made and was found to fit the S-N data well. The lowest load-level tested in this research was approximately 70 percent. At this load-level the specimen survived close to 3000 cycles. (Less)
Please use this url to cite or link to this publication:
author
Norlin, Magnus
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
report number
TVBK-5084
ISSN
0349-4969
language
English
id
3172155
date added to LUP
2012-12-04 11:30:18
date last changed
2014-06-12 08:53:48
@misc{3172155,
  abstract     = {The fatigue behavior of laminated veneer lumber (Douglas-fir) subjected to shearstress has been studied. The static shear strength of specimens, 37 by 102 by 406 mm was established through a three point bending test over a span of 305 mm. Four series of specimens were subjected to a cyclic load history with peak loads ranging from 95 to 80 percent of the static strength. The duration of each load cycle was approximately 32 seconds. A stress-level verses (log) number of cycles diagram was produced to show the fatigue behavior. The load-level was calculated from the static strength using the assumption of equal rank. A least square regression analysis was made and was found to fit the S-N data well. The lowest load-level tested in this research was approximately 70 percent. At this load-level the specimen survived close to 3000 cycles.},
  author       = {Norlin, Magnus},
  issn         = {0349-4969},
  language     = {eng},
  note         = {Student Paper},
  title        = {Fatigue Behaviour of LVL Subjected to Repeated Shear Stresses.},
  year         = {1996},
}