261 Failure of Mechanically Stressed Omega Loop Assemblies #AED at 50% RH (R2 = 0.98) but opposed trends in polymer MW and DHSA style- durability parameters, such as F1 and toughness at 50% RH. Interestingly, as indicated in the “DHSA-AED Results” section, the PVP K-30/PEG 400 treatment was perceived as having sensorial crunchiness properties like PVP K-60, which is much higher MW and has tougher film properties than neat PVP K-30 (see Table II). Resistance to compression was also rated by a smaller four-person sensory panel. For the VP-containing polymers, the resistance of the omega loop to compression negatively correlated with perceived crunchiness (R2 = 0.91) however, both the imidized p(IB/MA) and PVP K-30/PEG 400 blend treatments resulted in much higher crunchiness ratings than predicted by trends in the resistance-to-compression sensorial results. Hence, the perceived resistance to compression may be related to abrupt stiffness changes and perceived stick-slip friction, whereas crunchiness and #AED are properties evaluated throughout the omega loop compression. CONCLUDING REMARKS AED with texture analysis was applied to treated omega loop assemblies to provide perceptible insights into debonding pathways associated with structural failures in polymeric welds. Upon fracturing and debonding in a brittle manner, dislocated bits of cracked thermoplastic and polymer-coated fibers released elastic stresses by rapidly translating style remnants into new spatial positions—while vibrating neighboring air molecules and producing audible pressure waves. In contrast, compliant welds dissipated stress while liberating negligible #AED. Environmental water vapor, applied polymer solids, resin MW, cuticular surface energy, and the formulation delivery method each influenced the dB-SPL and #AED for discrete fracturing events. The #AED in DHSA correlated positively Figure 14. Relationship between average #AED and the average sensorial panel crunchiness rating results: A) PVP K-120 B) poly(VP/DMAPMA) C) poly(VP/MAPTAC) D) PVP K-90 E) PVP K-60 F) PVP K-30/ PEG 400 G) PVP K-15 H) PVP K-30 and I) imidized p(IB/MA). Panel studies were conducted at 48 ± 2% RH. The error bars indicate standard deviations.

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