From visual inspection of the failure sites and a detailed geotechnical investigation of soil from 24 nearby boreholes, it seemed that the failures caused primarily due to inadequate resistance from the soft soil of Indo-Gangetic plain, resulting bearing and overturning failures.
Inspection of the failure modes revealed that the existence of colloidal silica promotes crack propagation along a more tortuous path within the interphase that results in progressive failure and contributes to increased energy dissipation.
Manual inspection of modeling failures revealed that in several of those, only part of the peptide has been modeled at high resolution, resulting in overall inaccurate models that do not meet the formal success criterion.
Congressman James Oberstar is expected to call a safety hearing, telling CNN "The result of inspection failures, and enforcement failure, has meant that aircraft have flown unsafe, unairworthy, and at the risk of lives".
Inspection of the microscopic failure at the nickel particle/polymer interface in the film indicates quasi-brittle failure mode.
In remanufacturing, a large number of inspections and evaluations of failure condition in the parts have to be done, which are uneconomical and inefficient.
This paper advances the state of the art by: considering accurate polynomial chaos model of the random crack propagation process; considering number of inspections and crack repair size as design variables and; by performing sensitivity analysis of optimal inspection schedules and repair strategies with respect to the assumed costs of inspection and failure, as well as to the level of loading.
The formulation is extended to account for inspections, updating the probability of failure with its outcomes.
In case the inspection activities are performed too late, the probability of failure before the inspection is rather high, which leads to an increase of the associated costs.
It is shown that optimum total expected costs found herein are not highly sensitive to the assumed costs of inspection and failure.
