stress concentration factor for d/d = 1.09 - SERP Analysis

http://www.unm.edu/~bgreen/ME360/Stress_Concentration_Tables.pdf

https://www.efatigue.com/constantamplitude/stressconcentration/

https://web.iitd.ac.in/~jpkhatait/MCL211/Charts_Kt_Kts.pdf

https://www.chegg.com/homework-help/questions-and-answers/25-t-03-stress-concentration-factor-k-15-109-dld-10-005-010-015-020-025-030-rld-figure-5-q-q55245161

https://lim.ii.udc.es/docencia/iin-g-tecmaq/figuras3-4-5.pdf

https://research.iaun.ac.ir/pd/jjfesharaki/pdfs/UploadFile_9974.pdf

https://www.chegg.com/homework-help/questions-and-answers/table-11-theoretical-stress-concentration-factor-k-stepped-shaft-shoulder-fillet-radius-r--q65851735

https://mechanicalc.com/calculators/stress-concentration/

https://www.scribd.com/doc/253089403/Appendix-D6

https://www.researchgate.net/publication/327622723_Investigation_of_Optimum_Stress_Concentration_Factor_for_Shoulder_Fillet_in_Round_Bar_under_Different_Loading_Conditions