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Skills في هذا المستودع
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MP-AI-20/mechanical-engineering-skillsعرض ٤٠ من أصل ٦٤٧ skills مجمعة.
Investment casting process design — wax pattern, ceramic shell build, dewaxing, burnout, casting, shell thickness, Chvorinov's rule, riser design, gating, solidification, dimensional tolerances, surface finish, ASTM B557/A571, aerospace/turbine blade…
لغة النص الأصلي: الإنجليزية
J-integral fracture mechanics — elastic-plastic fracture, ASTM E1820 J-R curve, η-factor method, validity requirements, J_IC to K_IC conversion, crack tip opening displacement (CTOD), ductile tearing, constraint effects (T-stress, Q-factor), piping flaw…
لغة النص الأصلي: الإنجليزية
Jet engine thermodynamics — turbojet/turbofan Brayton cycle, SFC, overall efficiency, fan/compressor/turbine work, bypass ratio, component efficiencies, inlet recovery, afterburner.
لغة النص الأصلي: الإنجليزية
Jet impingement cooling for electronics and high-flux applications — confined single-phase liquid, submerged jets, micro-jet arrays, two-phase (boiling) impingement, CHF (critical heat flux), thermal resistance networks, Intel/IBM chip cooling, datacenter…
لغة النص الأصلي: الإنجليزية
Jet impingement heat transfer — stagnation Nusselt number, Martin correlation, H/D ratio, array impingement, spent flow management, crossflow degradation, confined vs. unconfined, turbine blade leading edge impingement, ANSYS CFD validation, pressure drop,…
لغة النص الأصلي: الإنجليزية
Joint replacement biomechanics — total hip arthroplasty (THA), total knee arthroplasty (TKA), bearing couple selection, wear mechanisms, instability and dislocation, tibial tray fixation, patellofemoral mechanics, revision arthroplasty, ASTM F2996/F3141, FDA…
لغة النص الأصلي: الإنجليزية
Jominy end-quench hardenability test — ASTM A255/E18 procedure, specimen geometry, hardness traverse, H-band steels, ideal critical diameter DI, Grossmann multiplying factors, Jominy distance to DI conversion, SAE H-band steel selection, alloy effect on…
لغة النص الأصلي: الإنجليزية
Kalman filter for mechanical engineering — linear KF derivation, process/measurement noise covariance Q/R, state estimation, Extended KF (EKF), Unscented KF (UKF), sensor fusion (IMU + GPS + encoder), vibration state estimation, structural health monitoring,…
لغة النص الأصلي: الإنجليزية
Keyway and spline design — key types, key stress (shear/bearing), ANSI key dimensions, spline profiles (involute/straight-sided), torque capacity, hub-shaft fit.
لغة النص الأصلي: الإنجليزية
Labyrinth seal design — leakage flow analysis, Carry-Martin equation, tooth geometry, clearance, pressure drop per tooth, straight/stepped/interlocked configurations, honeycomb stator interaction, rotordynamic effects, gas turbine applications, ASME PTC 19.1…
لغة النص الأصلي: الإنجليزية
Aircraft landing gear design — tricycle vs. tailwheel, load cases (FAR/CS-25), oleo strut sizing, brake energy, shimmy, retraction kinematics, tire selection, weight estimation.
لغة النص الأصلي: الإنجليزية
Laser cutting process design — CO₂ vs. fiber laser, kerf width, cutting speed, assist gas, power density, material-specific parameters (steel/aluminum/stainless/CFRP), heat-affected zone, edge quality, dimensional tolerance, nesting optimization, ISO 9013 cut…
لغة النص الأصلي: الإنجليزية
Laser peening (laser shock peening, LSP) — plasma pressure pulse, Hugoniot elastic limit, compressive residual stress depth, comparison to shot peening, process parameters (fluence, spot size, overlay, water confinement), fatigue life improvement, FOD…
لغة النص الأصلي: الإنجليزية
Laser beam welding — keyhole vs. conduction mode, power density threshold, weld geometry (aspect ratio, penetration depth), Rosenthal solution, HAZ, hot cracking, porosity prevention, fiber/CO₂/disk laser selection, filler wire, dissimilar metal welding, AWS…
لغة النص الأصلي: الإنجليزية
Leaf spring design — semi-elliptic, quarter-elliptic, multi-leaf, stress and deflection formulas, progressive rate, interleaf friction, fatigue, SAE standards.
لغة النص الأصلي: الإنجليزية
Leak testing — methods (pressure/vacuum decay, helium mass spectrometer, bubble, tracer gas, ultrasonic), leak rate units (Pa·m³/s, scc/s, mbar·l/s), sensitivity comparison, ASTM/ISO standards.
لغة النص الأصلي: الإنجليزية
Lean manufacturing — Toyota Production System (TPS), 8 wastes (DOWNTIME), value stream mapping (VSM), pull systems and kanban, one-piece flow vs. batch production, OEE (Overall Equipment Effectiveness), 5S methodology, SMED (Single Minute Exchange of Die),…
لغة النص الأصلي: الإنجليزية
Large Eddy Simulation (LES) — turbulence modeling theory, Smagorinsky model, dynamic Smagorinsky, wall models (WMLES), numerical schemes (implicit/explicit), filter width, grid requirements, subgrid-scale stress, LES vs. DNS vs. RANS, bluff body flows,…
لغة النص الأصلي: الإنجليزية
Life cycle assessment (LCA) — ISO 14040/14044, system boundary, functional unit, inventory analysis, impact categories (GWP, AP, EP), carbon footprint, eco-design, EPD.
لغة النص الأصلي: الإنجليزية
Lightweight design strategies — topology optimization (SIMP method), material efficiency index, density-strength-stiffness trade-offs, multi-material design, AHSS/aluminum/CFRP/magnesium selection, tailored blanks, hollow sections, lattice structures,…
لغة النص الأصلي: الإنجليزية
Plastic limit analysis — lower and upper bound theorems, yield line theory (slabs), collapse mechanisms, virtual work method, interaction diagrams (M-N-V), shakedown analysis, progressive collapse, ASME VIII plastic design rules, Drucker-Prager yield…
لغة النص الأصلي: الإنجليزية
Lip seal (radial shaft seal) design — RWSSD selection, shaft speed limits, lip contact pressure, housing/shaft tolerances, materials (NBR/FKM/PTFE), failure modes.
لغة النص الأصلي: الإنجليزية
Lithium-ion battery engineering — electrochemical fundamentals (half-cell reactions, Nernst equation, Butler-Volmer kinetics), cell chemistry (LCO/LFP/NMC/NCA/LTO cathodes, graphite anode), cell formats (cylindrical 18650/21700, pouch, prismatic), C-rate and…
لغة النص الأصلي: الإنجليزية
LNG (liquefied natural gas) systems — liquefaction cycles (SMR, C3MR, DMR, AP-X), cryogenic equipment, BOG (boil-off gas) management, storage tank design (full containment), rollover prevention, NFPA 59A, ISO 28460, regasification, cold flow properties,…
لغة النص الأصلي: الإنجليزية
Locking mechanisms — thread locking (friction, mechanical, chemical/Loctite), prevailing torque nuts, castle nuts/cotter pins, self-locking thread forms (Spiralock), wedge locking, vibration testing (NAS 3350 junker test), retaining rings, spring clips, snap…
لغة النص الأصلي: الإنجليزية
Layer of Protection Analysis (LOPA) — initiating event frequency, consequence severity, independent protection layers (IPL), probability of failure on demand (PFD), SIL determination, CCPS guidelines, LOPA worksheets, SIS design (IEC 61511), risk reduction…
لغة النص الأصلي: الإنجليزية
Linear Quadratic Regulator (LQR) control design — state space formulation, Riccati equation, Q and R weighting matrices, closed-loop pole placement, robustness margins, integral augmentation, LQI (LQR with integral), observer design (LQE/Kalman), output…
لغة النص الأصلي: الإنجليزية
Lubricant selection — viscosity grading (ISO VG, SAE), viscosity index, mineral vs. synthetic (PAO, ester, polyglycol), additive packages (AW, EP, DI), application matching (gears/bearings/engines/compressors), operating temperature range, compatibility,…
لغة النص الأصلي: الإنجليزية
Lubrication system design — pressure-fed, splash, oil mist, centralized grease systems, pump selection (gear/vane/screw), filter sizing, heat exchanger (oil cooler), sump design, oil flow rates, API 614 lube console, bearing oil supply requirements, condition…
لغة النص الأصلي: الإنجليزية
Lubrication theory and tribology — Reynolds equation derivation and solutions (journal bearing, slider bearing, squeeze film), Sommerfeld number, minimum film thickness (Ocvirk, Sommerfeld solutions), elasto-hydrodynamic lubrication (EHL) film thickness…
لغة النص الأصلي: الإنجليزية
Machine learning for engineering — regression/classification for property prediction, neural networks, physics-informed ML (PINN), surrogate models, Gaussian process, materials informatics, process optimization.
لغة النص الأصلي: الإنجليزية
Machinery condition monitoring — vibration analysis (FFT, envelope, cepstrum), bearing fault frequencies (BPFO/BPFI/BSF/FTF), ISO 10816 severity criteria, oil analysis, thermography, ultrasound, motor current analysis (MCSA), alarm levels, online monitoring…
لغة النص الأصلي: الإنجليزية
Machining economics — Taylor's tool life equation, minimum cost cutting speed, maximum production rate speed, tool cost per edge, economic tool life, cycle time, machine hourly rate, setup cost, scrap cost, total cost per part, process selection economics,…
لغة النص الأصلي: الإنجليزية
Machining parameters — cutting speed, feed, depth of cut, power, surface finish, tool life (Taylor's equation), turning/milling/drilling/grinding. Material-specific recommendations.
لغة النص الأصلي: الإنجليزية
Active magnetic bearing (AMB) design — electromagnetic force, bias flux, control current, position stiffness (negative), current stiffness, PID/LQR control, rotor dynamics (critical speed, stability), auxiliary (backup) bearings, ISO 14839, API 617 AMB, power…
لغة النص الأصلي: الإنجليزية
Magnetic particle inspection (MPI/MT) — magnetization methods (circular/longitudinal, AC/HWDC/FWDC), flux density requirements (B=1.5-2.5T for ferromagnetic), current level selection (π×D×800 A/m rule), wet vs dry particles, fluorescent vs visible,…
لغة النص الأصلي: الإنجليزية
Magnetostrictive materials and devices — Joule magnetostriction, Terfenol-D properties, actuator design (bias magnet, prestress, power density), magnetostrictive position sensors (Temposonics), linear variable differential transformer (LVDT) comparison,…
لغة النص الأصلي: الإنجليزية
Maintainability engineering — MTTR prediction (MIL-HDBK-472, Procedure V), maintenance task analysis (MTA), level of repair analysis (LORA), built-in test (BIT/BITE), LRU/SRU design, maintenance manhours per flight hour (MMH/FH), operational availability…
لغة النص الأصلي: الإنجليزية
Marine inspection — hull surveys (class, flag state, PSC), thickness gauging (UT), coating condition, corrosion allowance, ABS/DNV/Lloyd's classification, IACS common structural rules (CSR), close-up survey requirements, SOLAS Chapter II-1, condition…
لغة النص الأصلي: الإنجليزية
Masonry structural design — compressive strength f'm (from unit + mortar per TMS 402), allowable stress vs. strength design, unreinforced masonry (URM) axial and flexural design, reinforced masonry beam and wall, slender wall design (P-delta, moment…
لغة النص الأصلي: الإنجليزية