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SkillsMP a collecté 647 skills depuis MP-AI-20/mechanical-engineering-skills. Ouvrez un skill pour examiner sa source et ses détails.
MP-AI-20/mechanical-engineering-skillsAffichage de 40 skills collectés sur 647.
Transient heat conduction — lumped capacitance, Biot number, Heisler charts, semi-infinite solid, 1D Fourier series solution, product solution for multi-D problems.
Langue du texte source : anglais
Tribological coatings — PVD (TiN, TiAlN, DLC), CVD, thermal spray, friction coefficients, hardness, adhesion, applications in cutting tools, bearings, forming dies.
Langue du texte source : anglais
Tribological testing — pin-on-disk (ASTM G99), block-on-ring (G77), four-ball (G99/D2266), linear reciprocating (G133), ball-on-flat, fretting, dry sand/rubber wheel (G65), high-speed high-stress abrasion (G105), friction coefficient measurement, wear rate…
Langue du texte source : anglais
Tribology — lubrication regimes (Stribeck curve), hydrodynamic bearing theory (Reynolds equation), EHD lubrication, film thickness, wear models (Archard), friction, lubricant viscosity selection.
Langue du texte source : anglais
Truss analysis — method of joints, method of sections, zero-force members, statically determinate/indeterminate trusses, space trusses, deflection by virtual work/unit load method.
Langue du texte source : anglais
Tuned mass damper (TMD) — Den Hartog optimal tuning (f_opt = 1/(1+µ), ζ_opt = √(3µ/(8(1+µ)³))), mass ratio µ, frequency response with TMD, stroke limits, multi-degree TMD (MTMD), pendulum TMD, active and semi-active TMD (MR damper), TMD for wind-induced…
Langue du texte source : anglais
Turbocharger design — compressor/turbine matching, surge margin, efficiency islands, boost pressure, wastegate, intercooler, twin-scroll, electric turbo, SAE sizing.
Langue du texte source : anglais
Turbofan engine thermodynamic cycle — bypass ratio (BPR), overall pressure ratio (OPR), turbine inlet temperature (TIT/T4), fan pressure ratio (FPR), specific thrust, thrust specific fuel consumption (TSFC), cycle analysis (ideal and real with component…
Langue du texte source : anglais
Turbomachinery — Euler turbine equation, velocity triangles, centrifugal compressors, axial turbines/compressors, specific speed, cavitation, pump selection, turbine efficiency.
Langue du texte source : anglais
Turning (lathe) operations — cutting speed, feed, depth of cut, tool life (Taylor), cutting forces (Merchant/Oxley), surface roughness, insert grades, power, MRR.
Langue du texte source : anglais
Two-phase gas-liquid flow — flow regimes, void fraction, Lockhart-Martinelli pressure drop, Baker chart, two-phase multiplier, steam-water quality, drift-flux model.
Langue du texte source : anglais
Ultrasonic welding — energy director design, joint types, frequency (20-40 kHz), amplitude, weld force, energy/time/distance modes, thermoplastic selection, amorphous vs. semi-crystalline, AWS/AWS standards.
Langue du texte source : anglais
Underground piping systems — soil load (Marston formula for buried pipe), live load (AASHTO H20 truck), pipe bedding classes and load factors, flexible pipe deflection (Iowa formula Δx/D), rigid pipe (concrete, clay) crack load and three-edge bearing…
Langue du texte source : anglais
Underwater acoustics — sound propagation in seawater (speed, absorption, spreading loss), sonar equation (SL-TL-NL+DI≥DT), passive and active sonar, transmission loss (spherical/cylindrical/ray tracing), transducer design (piezoelectric, BVD model,…
Langue du texte source : anglais
Mechanical engineering unit conversion — stress, force, pressure, length, area, moment of inertia, torque, power, temperature, thermal properties, flow rate, viscosity. Imperial ↔ SI ↔ metric.
Langue du texte source : anglais
Value engineering (VE) — function analysis (FAST diagram, primary/secondary/basic functions), value index V = F/C, 40 inventive principles (TRIZ), job plan phases (information, function analysis, creative, evaluation, development, presentation), Pareto…
Langue du texte source : anglais
Valve cavitation — cavitation inception (σ = (p1-pv)/(p1-p2)), choked flow, flashing, incipient cavitation coefficient σi and critical cavitation coefficient σc, damage potential index (cavitation index Cv), control valve sizing with FLp correction,…
Langue du texte source : anglais
Valve field troubleshooting — gate galling (adhesive wear, Stellite hardfacing), pressure lockup (thermal expansion ΔP=βΔT/κ_T, DBB cavity), wire drawing erosion, cavitation (σ=P2-Pv/P1-P2), flashing, fugitive emissions (API 624, ISO 15848), seat leakage…
Langue du texte source : anglais
Control valve noise — aerodynamic noise from gas/steam throttling (IEC 60534-8-3 method), mechanical vibration, hydrodynamic noise from liquid cavitation, sound power level Lw calculation, pipe wall transmission loss TL, A-weighted sound pressure level at 1m…
Langue du texte source : anglais
Control valve sizing — Cv/Kv calculation for liquid (ISA/IEC 60534), gas (compressible, critical flow), steam (superheat/saturated), inherent flow characteristics (equal percentage, linear, quick opening), installed characteristics, rangeability, valve…
Langue du texte source : anglais
Engine valve train — cam profile design (harmonic, polynomial, spline cams), valve lift and timing (IVO/IVC/EVO/EVC, duration, overlap), cam follower dynamics (contact stress, follower acceleration), rocker arm geometry and mechanical advantage, valve spring…
Langue du texte source : anglais
Vehicle aerodynamics — aerodynamic drag (Cd and frontal area A, drag force F_D = 0.5ρCdAv²), lift and downforce (Cl, Cl_f/Cl_r), road load equation, cooling drag, underbody aerodynamics (diffuser, flat floor), active aerodynamics (active rear wing, air…
Langue du texte source : anglais
Vehicle dynamics — handling, tire forces, bicycle model, oversteer/understeer, roll stiffness, pitch/bounce, load transfer, stability derivatives, braking performance.
Langue du texte source : anglais
Verification and Validation (V&V) — ASME V&V 10/20, model validation metrics, uncertainty quantification, code verification (Richardson extrapolation, MMS), validation hierarchy, AIAA standards.
Langue du texte source : anglais
Vibration absorber and tuned mass damper — undamped/damped DVA design, optimal tuning (Den Hartog), frequency ratio, mass ratio, suppression bandwidth, applications.
Langue du texte source : anglais
Vibration acceptance criteria — ISO 10816/20816 machinery severity zones, velocity RMS limits, bearing acceleration envelope, process plant piping vibration (Energy Institute), hand-arm vibration HAV.
Langue du texte source : anglais
Vibration isolation design — transmissibility, mount stiffness selection, damping optimization, active vs passive isolation, multi-axis isolation, machinery mounting, seismic isolation.
Langue du texte source : anglais
Vibration testing — accelerometers, modal testing (EMA/OMA), frequency response functions (FRF), coherence, impact hammer, shaker setup, ODS, data acquisition, resonance identification.
Langue du texte source : anglais
Visual inspection (VT) — direct and remote visual inspection (RVI), borescope types (rigid/flexible/videoscope), resolution and illumination requirements (ASME V Article 9), minimum detectable defect size calculation, illumination ≥ 500 lux (direct) / ≥ 50…
Langue du texte source : anglais
Pump/fan volute design — spiral volute geometry, constant velocity vs. constant angular momentum methods, diffuser design, radial force, throat area, scroll design, double volute.
Langue du texte source : anglais
Von Mises yield criterion — principal stress transformation, 2D/3D von Mises stress, Mohr's circle, distortion energy theory, comparison with Tresca, failure envelope.
Langue du texte source : anglais
Water hammer (hydraulic transients) — Joukowsky equation, wave speed, pressure surge, valve closure time, pipeline protection (surge tank, PRV, air vessel), Allievi equations.
Langue du texte source : anglais
Waterjet cutting — pure waterjet (PW) and abrasive waterjet (AWJ) processes, Bernoulli orifice jet velocity, kerf width and taper, cutting speed models (Hashish, Zeng), standoff distance, abrasive type and grit size, nozzle wear, cutting depth for multi-pass,…
Langue du texte source : anglais
Wave energy conversion — ocean wave power density (P = ρg²H²T/(32π)), point absorber (Froude-Krylov force, heave resonance, power take-off PTO), oscillating wave surge converter (OWSC), attenuator (Pelamis), oscillating water column (OWC, Wells turbine),…
Langue du texte source : anglais
Wave spring design — flat wire, multi-turn, Smalley wave springs, load-deflection, space-saving vs coil spring, material selection, applications.
Langue du texte source : anglais
Weibull analysis — 2-parameter and 3-parameter Weibull, Weibull plotting, maximum likelihood estimation, B10/B50 life, confidence bounds, bathtub curve, reliability prediction.
Langue du texte source : anglais
Weld design and analysis — fillet and groove welds, weld groups under combined loading, AWS/AISC allowable stresses, throat area, fatigue of welds, preheat requirements.
Langue du texte source : anglais
Welding process selection — SMAW, GMAW, GTAW, FCAW, SAW, resistance welding, laser. Heat input, distortion control, preheat, PWHT, inspection methods, AWS D1.1 qualification.
Langue du texte source : anglais
Welding field troubleshooting — porosity (gas entrapment, hydrogen, nitrogen), hot cracking (solidification/liquation cracking, Varestraint test, carbon equivalent CE), cold cracking/hydrogen-induced cracking (HIC, Pcm formula, preheat calculation, CEIIW),…
Langue du texte source : anglais
Welding metallurgy — HAZ zones, grain growth, solidification, weld microstructure, martensite formation, carbon equivalent, PWHT, hydrogen cracking, preheat, interpass temperature.
Langue du texte source : anglais