Originally Posted by deepakvermaa

Respected seniors & dear friends,

is there any method to determine the deterioration of steel cord joints?

Our system is running round the clock since around 3 years.

I want to know which joints life is finshed/ is on the verge of finishing so that we can take proactive action to replace that particular joint.

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There are a number of ways:

1. Observation of splice cord ends cause dimples at the cord ends when the opposing cords pull away from each other causing rubber the fill the void with an observed depression

2. When cords pull out of their vulcanized route, within the splice, they tend to cause the bottom or pulley cover of the belt to create lumps to the observer which are caused when the extended/tensioned cord, in the splice, does not return to its original non-extended position when the tension is removed/reduced.

3. Belt scan either by x-ray (isotope-to- x-ray sensitive film - like dentist use) showing white ghosting, on film, around debonding of rubber to cords in splice or,

4. Belt scan by magnetic flux with identifies wire rope bare ends due to eddy rings that behave like Doppler image with moving belt at wire breaks or similar to item 1 above, measuring growth in step length between scans. ■

Originally Posted by nordell

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There are a number of ways:

1. Observation of splice cord ends cause dimples at the cord ends when the opposing cords pull away from each other causing rubber the fill the void with an observed depression

2. When cords pull out of their vulcanized route, within the splice, they tend to cause the bottom or pulley cover of the belt to create lumps to the observer which are caused when the extended/tensioned cord, in the splice, does not return to its original non-extended position when the tension is removed/reduced.

3. Belt scan either by x-ray (isotope-to- x-ray sensitive film - like dentist use) showing white ghosting, on film, around debonding of rubber to cords in splice or,

4. Belt scan by magnetic flux with identifies wire rope bare ends due to eddy rings that behave like Doppler image with moving belt at wire breaks or similar to item 1 above, measuring growth in step length between scans.

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5. Magnetic pins are inserted on belt edges, at each end of splice, and distance set when first installed. Subsequent monitoring reveals change in distance under similar tension conditions = elongation indicates splice pulling apart. ■

Lurking somewhere in the forum is an Australian outfit who has the equipment you seek. I was impressed by the technology presentation which involved full time monitoring of several belt characteristics. I think they used one of Larry's methods, #3 0r #4. Perhaps you could manage to procure a watered down version to suit. Success. ■