Table 2. Fatigue Methods Table 3. Standards and Specifications Method Respondents Reference Respondents Miners 30 ASTM E 1049 5 Rainflow 18 ASME BPVC 2 Dirlk 9 DNV RP-C203 2 Steinberg 7 MMPDS-01 2 Rayleigh 5 RTCA DO-160 1 Coffin-Manson 2 BS7910 1 Engelmaier 2 API-RP-579 1 Goodman 2 ESA Requirements 1 Lalanne 1 DNV-OS-J101 1 VRS 1 Eurocode 3 1 Jiao and Moan 1 GOST 25.502-79 1 Alpha 0.75 1 GOST 23207-82 1 Benasciutti 1 ISO TS 10811 1 Soderberg 1 Welding Institute 1 Paris-Erdogan 1 GSFC-STD-7000 1 Hobbacher 1 AISI 1 ESDU 1 AISC 1 Fatemi-Socie 1 MIL-HDK-5 1 APPENDIX A 1 For the SLS Core Stage, we are using heritage cycle counting programs from the shuttle program for coupled loads low frequency transient cycle counting. For high frequency, we are using the Dirlik methodology for specific calculations of selected items. For first cut general approximations, we use simplified Rayleigh approximations. 2 I have been using both nCode Glyphworks (Lalanne) and Vibration Research's Fatigue Damage Spectrum. Both tools apply Miners rule with an SN curve to yield very similar results.
Table 2. Fatigue Methods Method Respondents Miners 30 Rainflow 18 Dirlk 9 Steinberg 7 Rayleigh 5 Coffin-Manson 2 Engelmaier 2 Goodman 2 Lalanne 1 VRS 1 Jiao and Moan 1 Alpha 0.75 1 Benasciutti 1 Soderberg 1 Paris-Erdogan 1 Hobbacher 1 ESDU 1 Fatemi-Socie 1 Table 3. Standards and Specifications Reference Respondents ASTM E 1049 5 ASME BPVC 2 DNV RP-C203 2 MMPDS-01 2 RTCA DO-160 1 BS7910 1 API-RP-579 1 ESA Requirements 1 DNV-OS-J101 1 Eurocode 3 1 GOST 25.502-79 1 GOST 23207-82 1 ISO TS 10811 1 Welding Institute 1 GSFC-STD-7000 1 AISI 1 AISC 1 MIL-HDK-5 1 APPENDIX A 1 For the SLS Core Stage, we are using heritage cycle counting programs from the shuttle program for coupled loads low frequency transient cycle counting. For high frequency, we are using the Dirlik methodology for specific calculations of selected items. For first cut general approximations, we use simplified Rayleigh approximations. 2 I have been using both nCode Glyphworks (Lalanne) and Vibration Research's Fatigue Damage Spectrum. Both tools apply Miners rule with an SN curve to yield very similar results.
fatigue_survey_revA.docx