Good Day,
I have a bit of a dilemma regarding how to accurately measure the number of field defects or failures. Each fielded unit consists of an electrical harness, and on average each harness consists of 8 connectors, and within each connector are approximately 30 mechanically crimped wire to contacts or connections.
The harnesses are used to conduct 24/7 performance validation/verification tests; such that if one or fifty wire/contact crimped connection(s) fail(s) the test is terminated, the harness replaced and the test must be re-started from "0" time, very costly and more embarrassing.
Once shipped to the customer, and a contact fails, the harness is labeled defective and returned for repair of replacement.
Given that when one crimped contact fails the entire harness is classified as defective, leads me to believe that, I should merely evaluate the population of all harnesses as good or bad based on this.
Yet given the number of crimped connections in each harness or unit, it would appear to be more realistic to calculate the yield based on the total number of contacts in the larger population of all harnesses in given period of time. I only have attribute data for the period in time these units were fabricated.
Any suggestions from the Cove will be appreciated. Thank you.
Regards,
Marty
I have a bit of a dilemma regarding how to accurately measure the number of field defects or failures. Each fielded unit consists of an electrical harness, and on average each harness consists of 8 connectors, and within each connector are approximately 30 mechanically crimped wire to contacts or connections.
The harnesses are used to conduct 24/7 performance validation/verification tests; such that if one or fifty wire/contact crimped connection(s) fail(s) the test is terminated, the harness replaced and the test must be re-started from "0" time, very costly and more embarrassing.
Once shipped to the customer, and a contact fails, the harness is labeled defective and returned for repair of replacement.
Given that when one crimped contact fails the entire harness is classified as defective, leads me to believe that, I should merely evaluate the population of all harnesses as good or bad based on this.
Yet given the number of crimped connections in each harness or unit, it would appear to be more realistic to calculate the yield based on the total number of contacts in the larger population of all harnesses in given period of time. I only have attribute data for the period in time these units were fabricated.
Any suggestions from the Cove will be appreciated. Thank you.
Regards,
Marty