T
thm219
Hi all,
I am a newbie here so please bear with me if I am asking the obvious stuffs.
I am currently interning for a medical device manufacturing firm and I am involved in this project that I do not know where to start.
Basically, we are trying to evaluate film cutting blades from two different suppliers:
Blades from supplier A: we are currently buying from this supplier. We have to change them every one or two week as they either get broken or blunt when there is production everyday (two shifts per day, each shift 12 hours).
Blades from supplier B: Less expensive of the two.
The problem is how do we design an experiment to compare a characteristic that would only show overtime like: sharpness or resistance to crack?
We can actually do a real simulation by putting both blades through a whole week of full force production run and then compare the state of the blades and products eventually. However, that would mean wasting a lot of materials and time.
I could not get the critical info about the blades such as blade sharpness index, just the physical dimensions. Their performance is judged based sole on whether products meet specifications and any other visual observation of the blades like cracks.
I have two major questions:
1) How to compare the sharpness of the two blades when they are brand new/after they are used for several runs?
2) Supposedly initially one blade is sharper than the other, does it mean it would continue to retain its sharpness over a longer time duration?
I am an industrial engineering student in year 2 and have no knowledge and experience in basic DOE yet. Any clue on this?
I am a newbie here so please bear with me if I am asking the obvious stuffs.
I am currently interning for a medical device manufacturing firm and I am involved in this project that I do not know where to start.
Basically, we are trying to evaluate film cutting blades from two different suppliers:
Blades from supplier A: we are currently buying from this supplier. We have to change them every one or two week as they either get broken or blunt when there is production everyday (two shifts per day, each shift 12 hours).
Blades from supplier B: Less expensive of the two.
The problem is how do we design an experiment to compare a characteristic that would only show overtime like: sharpness or resistance to crack?
We can actually do a real simulation by putting both blades through a whole week of full force production run and then compare the state of the blades and products eventually. However, that would mean wasting a lot of materials and time.
I could not get the critical info about the blades such as blade sharpness index, just the physical dimensions. Their performance is judged based sole on whether products meet specifications and any other visual observation of the blades like cracks.
I have two major questions:
1) How to compare the sharpness of the two blades when they are brand new/after they are used for several runs?
2) Supposedly initially one blade is sharper than the other, does it mean it would continue to retain its sharpness over a longer time duration?
I am an industrial engineering student in year 2 and have no knowledge and experience in basic DOE yet. Any clue on this?