Abstract: A method of evaluating a low voltage (LV) battery system includes collecting parameters of the LV battery system, determining a health of the LV battery system based on one or more health indicators of a plurality of health indicators, and based on determining that the battery system is in an unhealthy condition, identifying a cause of the unhealthy condition based on selection of a set of health indicators. Determining the health includes identifying an enabling condition related to charging or discharging of the LV battery system, selecting a set of health indicators from the plurality of health indicators based on the identified enabling condition, estimating a value of each of the set of health indicators, and determining whether the LV battery system is in a healthy condition or the unhealthy condition based on the collected parameters and the value of each of the set of health indicators.

Abstract: Coumarin modification of epoxies provide for epoxy adhesives that fluoresce under short wave ultraviolet irradiation while remaining invisible under normal light. Furthermore, these modified epoxy adhesives can have increased adhesive bond strengths. In addition, photochemical curing of an epoxy modified coumarin and a hardening agent with UV irradiation at certain wavelengths affords an epoxy adhesive composition. Further UV irradiation of the composition at certain wavelengths causes photoscission, which breaks the crosslinks that make the cured epoxy adhesive insoluble and intractable.

Abstract: Coumarin modification of epoxies provide for epoxy adhesives that fluoresce under short wave ultraviolet irradiation while remaining invisible under normal light. Furthermore, these modified epoxy adhesives can have increased adhesive bond strengths. In addition, photochemical curing of an epoxy modified coumarin and a hardening agent with UV irradiation at certain wavelengths affords an epoxy adhesive composition. Further UV irradiation of the composition at certain wavelengths causes photoscission, which breaks the crosslinks that make the cured epoxy adhesive insoluble and intractable.