Nafis Ahmad

cad cam solid modelling maintenance management maintenance maintenance and safety management scaling translation rotation marr payback period discounted payback period cim annuity locating principles acceptance test safety safety management super finishing maintenance department functions effective maintenance management maintenance management indices preventive maintenance mttf mtbf corrective maintenance types of corrective maintenance steps for corrective maintenance corrective maintenance measure different models of corrective maintenance rcm rcm components rcm strategies failure mode & effect analysis fmea root cause analysis rca pareto analysis 80-20 rule cause and effect diagram fishbone diagram ishikawa diagram cadcam manufacturing automation cubic polynomial hermite curve bézier curve surface modelling b-rep csg locators wireframe surface engineering economy engineering project cost benefits green engineering cost concepts fixed cost variable cost price demand relationship maximum revenue maximum profit profit area optimum demand time value of money economic equivalence present amount future amount interest rate step express dxf mutually exclusive alternatives capital recovery alternatives with different life alternatives with equal life depreciation income tax straight line method declining balance methods after tax cash flow db with switchover to sl public projects b-c ratio replacement analysis useful life euac economic life ownership life physical life breakeven analysis sensitivity analysis assumed certainty multi-attributes nonmonetary attributes multiple objectives barcode fms aidc time period computer graphics 2d graphics 3d graphics lapping hobbing gear shapper gear cutting pw fw irr err grinding qrcode entity manipulation data structure present worth (pw) future worth (fw) annual worth (aw) internal rate of return (irr) external rate of return (err) industrial robots manipulator kinematics joint space method world space method accuracy repeatability data exchange neutral format iges