Sökning: "Theoretical models of thermal"

Visar resultat 21 - 23 av 23 uppsatser innehållade orden Theoretical models of thermal.

  1. 21. The effect of prior austenite grain size on the machinability of a pre-hardened mold steel. : Measurement of average grain size using experimental methods and empirical models.

    Master-uppsats, Avdelningen för maskin- och materialteknik

    Författare :Muhammad Aatif Irshad; [2011]
    Nyckelord :prior austenite grain size; machining; mold steels; pre-hardened mold steels; work hardening; retained austenite; metallography; tool steels; chemical etching; prior austenite grains; lath martensite; rough machining; finish machining; Metallographic specimen preparation; Austenite grain growth; cutting tool; cutting tool life; wear; Theoretical average chip thickness;

    Sammanfattning : The use of pre-hardened mold steels has increased appreciably over the years; more than 80% of the plastic mold steels are used in pre-hardened condition. These steels are delivered to the customer in finished state i.e. there is no need of any post treatment. LÄS MER

  3. 22. A Study on the Design of Reconfigurable ADCs

    Master-uppsats, Elektroniksystem; Tekniska högskolan

    Författare :Prakash Harikumar; Anu Kalidas Muralidharan Pillai; [2011]
    Nyckelord :ADC; Sigma-Delta; Delta-Sigma; MASH; Pipelined; Reconfigurable; MDAC; Loop filter; Switched-Capacitor; SNDR; Time-interleaved; Flash;

    Sammanfattning : Analog-to-Digital Converters (ADCs) can be classified into two categories namely Nyquist-rate ADCs and OversampledADCs. Nyquist-rate ADCs can process very high bandwidths while Oversampling ADCs provide high resolution using coarse quantizers and support lower input signal bandwidths. LÄS MER

  4. 23. Simulation of Residual Stresses in Castings

    Kandidat-uppsats, JTH, Maskinteknik

    Författare :Ruben Lora; Jayesh Namjoshi; [2008]
    Nyckelord :Residual stresses • Thermo-mechanical • Quasi-static • Castings • FEM • FDM • Numerical simulation • Solidification • Thermal analysis • Stress analysis • Meshing • Abaqus • Magmasoft • Hypermesh • Matlab • ProEngineer;

    Sammanfattning : This work presents a study and implementation of the simulation of residual stresses in castings. The objects of study are a cast iron truck Hub part (provided by the company Volvo 3P) and an optimized version of the Hub resulting from the application of a topology optimization process. LÄS MER