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This thesis investigates failure in sandwich panels due to bending, specifically localised buckling or wrinkling, a predominant failure mechanism for thin gauge honeycomb sandwich panels loaded in bending or compression. Over the past 60 years, considerable work has been devoted to understanding wrinkling and trying to predict failure loads in damaged and undamaged panels accurately. Existing... [Thesis or Dissertation]

The use of helicopters for maintenance on live overhead transmission lines has become a realistic option. The helicopter blades, body and working platform can be seen as creating an incomplete Faraday cage, which may be an enhancement to live-line worker safety. This paper simulates the condition using a Faraday cage which can be dismantled, in a controlled laboratory environment to ascertain... [Journal Article]

Following conceptual development a prototype data-driven simulation model was developed, for decision support, with an actual aircraft materials remanufacturing system located in Christchurch, New Zealand. The model consists of structured logic statements based on observations and information supplied by the system's staff. It processes information relating to staffing levels and the work... [Book]

Remanufacturing consists of repair or refurbishment of worn parts and products. Systems involved with remanufacturing differ from more traditional manufacturing operations in terms of material and work content characteristics. Parts are subject to variable recovery rates and lead times, while service requirements are unknown in advance and processing times are stochastic. This paper describes a... [Book]

Remanufacturing is a process involving the repair or refurbishment of worn parts. Systems involved with remanufacturing differ from more traditional manufacturing operations in terms of material and work content characteristics. Parts are subject to variable recovery rates and lead times, while service requirements are unknown in advance and the processing times are variable. A data-driven... [Book]

The design and manufacture of lightweight electric vehicles is becoming increasingly important with the rising cost of petrol, and the effects emissions from petrol powered vehicles are having on our environment. The University of Waikato and HybridAuto's Ultracommuter electric vehicle was designed, manufactured, and tested. The vehicle has been driven over 1800km with only a small... [Thesis or Dissertation]

The NASA Space shuttle must be the most sophisticated engineering accomplishment of humankind. The catastrophic loss of Columbia and crew at reentry early this year was totally unexpected and a blow to manned space exploration. DIRK PONS looks into the final moments of Columbia. [Journal Article]

Specification of spacecraft subsystem interactions is typically carried out using informal diagrams and descriptions that can obscure subtle ambiguities and inconsistencies. As a result, problems in the way subsystems are designed to interact may remain undetected until the integration and test phase, when the cost of change is high. Our Behavioral Analysis of Spacecraft Systems (BASS) modeling... [Conference Paper]