Thermal Finish

Thermal modeling for white layer predictions in finish hard turning

Part thermal damage is a process limitation in finish hard turning and understanding process parameter effects, especially, tool wear, on cutting temperatures is fundamental for process modeling and optimization. This study develops an analytical model for cutting temperature predictions, in particular, at the machined-surfaces, in finish hard turning by either a new or worn tool. A mechanistic...

To finish or not to finish?

Start Finish

Many real-world planning problems require generating plans that maximize the parallelism inherent in a problem. There are a number of partial-order planners that generate such plans; however, in most of these planners it is unclear under what conditions the resulting plans will be correct and whether the planner can even nd a plan if one exists. This paper identiies the underlying assumptions a...

Surface Finish

Q.1. What factors govern the selection of a particular cleaning process for metallic surfaces Ans. Selection of cleaning process is mainly influenced by (a) Type of contaminants (b) Degree of cleanliness required (c) Composition of metal (d) Condition of metal (e) Thickness of rust and scale (f) Allowable metal loss (g) Surface finish tolerances (h) Shape and size of workpieces (i) Production r...

Earliest Finish Time Earliest Finish Time Worst Case Best Case Latest Finish Time Best Case Latest Finish Time Worst Case Duration Activity Activity

In this paper, we present a novel technique for modeling, checking, and enforcing temporal constraints in workkow processes containing conditionally executed activities. Existing workkow time model-ing proposals either do not discriminate between time constraints that apply to disparate execution paths, or they treat every execution path independently. Consequently, superruous time constraint v...