In reply to joecmorris:
Sorry to be blunt but the survey is garbage. If you're actually interested in capturing how rock climbers use and think about their ropes I'd pull it and have another go.
There's a huge gap between yearly and never whereas nobody replaces or fully inspects their personal kit weekly.
What exactly does "concerned about my rope" mean? "Do you worry about the condition of your rope?" would capture how I feel more generally about my rope, my 'concern' could be justified or not, by its actual condition and history.
When I get rid of a rope I could be near certain it's safe because I'm still happy using it on the day I decide but it's tired, time for a new one. Or I can be near certain it's unsafe because it came out of a pool of battery acid. I've done both, it's about the individual rope, not me.
What is expensive or not changes fast with personal financial circumstances, the value of the thing less so.
The when do you dispose of a rope question would probably capture more information if it were open or a multi-tick option with an open 'other' line. 'After a personal decision' covers all three options anyway!
Out of curiosity though, what's your course/background? What would assisted/automated NDT of a climbing rope even entail, AI visual assessment, mechanical stress-strain analysis, some sort of spectroscopic chemical analysis? It's pretty hard to beat running a rope through your hands, especially since we do it every time it's used, they're incredibly sensitive.
jk
Post edited at 16:24