Method to predict a strength of an ultrasonic weld-joint

1. A method used to predict a strength of an ultrasonic weld-joint of a wire-cable, comprising the steps of:

providing a sample of a wire-cable containing an organic contaminant;

determining a combined-weight of the wire-cable and the contaminant;

removing the contaminant from a surface of the wire-cable using a heat-source;

determining a weight of the wire-cable after the contaminant has been removed;

determining a percentage-by-weight of the contaminant removed from the wire-cable based on a formula [(Mb−Ma)/Mb]*100, wherein Mb is the combined-weight of the wire-cable and the contaminant and Ma is the weight of the wire-cable; and

determining whether the percentage-by-weight of the contaminant is less than a predetermined threshold, wherein said threshold correlates to the strength of the ultrasonic weld-joint.

2. The method in accordance with claim 1 , wherein the wire-cable is a stranded-wire-core.

3. The method in accordance with claim 1 , wherein the wire-cable is formed from material selected from the list consisting of aluminum-based material and copper-based material.

4. The method in accordance with claim 3 , wherein the wire-cable is plated with tin.

5. The method in accordance with claim 1 , wherein the heat-source is an oven and wherein the method further includes the step of placing the sample inside the oven.

6. The method in accordance with claim 5 , wherein a temperature inside the oven is 300 degrees Celsius.

7. The method in accordance with claim 1 , wherein said threshold is 0.021 percentage-by-weight.