Index Catalog // ScholarsArchive@OSU

Three-dimensional, nonlinear viscoelastic analysis of laminated composites : a finite element approach

Creator:: Wang, Min
Abstract:: Polymeric composites exhibit time-dependent behavior, which raises a concern about their long term durability and leads to a viscoelastic study of these materials. Linear viscoelastic analysis has been found to be inadequate because many polymers exhibit nonlinear viscoelastic behavior. Classical laminate theory is commonly used in the study of laminated...
Resource Type:: Dissertation
Full Text:: of unnotched laminates; 2) bending of a thick laminated plate; and 3) tensile loading of notched

Experimental evaluation and numerical modeling of a water source heat pump evaporator

Creator:: Means, Paul Morency
Abstract:: Water source heat pumps are increasingly being used for residential and commercial space heating. Typically, these heat pumps are capable of both heating and cooling, and historically the design emphasis has been on improving the units' cooling performance. Recently, there has been more interest in improving the heating performance, however,...
Resource Type:: Masters Thesis
Full Text:: guidance and input over the past 1 1/2 years for which I am deeply grateful. I also appreciate the efforts

Testing and design procedures for electric propellant pumps for suborbital bi-propellant rockets

Creator:: Verna-Ketel, Dominic
Abstract:: An electrically driven propellant pump (HALE E-Pump) was analysed and tested to determine its viability for use in a bi-propellant launch vehicle for the High-Altitude Liquid Engine (HALE) student rocket team at Oregon State University (OSU). The pump, manufactured in 2022 by students in OSU machine shops, was hydrostatically tested...
Resource Type:: Honors College Thesis
Full Text:: E-Pump Team . . . . . . . . . . . . . . . . . . . 2 1.3 Thesis Objectives

Processing of laser interferometric signals for small displacement measurements

Creator:: Peng, Gwo-sheng
Abstract:: Algorithms for analyzing laser interferometry signals were developed and adopted to the computer based processing of small displacement measurements. These methods, matrix operation approach and fixed parameters approach, are based on signal phase calculation and are able to replace complex fringe counting electronic circuits. The matrix operation provides an approach...
Resource Type:: Dissertation
Full Text:: SG LVDT's (dilatometers) <104 10-2 104 SG Electronic Gages 10-9 10-5 10-9 C Resistance Transducers 10

An analysis of peripheral milling of finger-joints in ponderosa pine cut-stock

Creator:: Liu, Yongsheng
Abstract:: To make low grade lumber into high-valued products, finger-jointing is a widely used method in the timber industry. In certain situations, chip-out occurs degrading the quality of the joint. To better understand the machining process, a beam-type dynamometer based on strain gages was designed to analyze the dynamic cutting forces...
Resource Type:: Masters Thesis
Full Text:: 2. Orthogonal Cutting 4 3. Peripheral Cutting 4 Cutting Path 5 Cutting Parameters 5 4. Chip

Computer model for estimating cogeneration system performance and economic feasibility

Creator:: Simonds, John E.
Abstract:: Cogeneration is the simultaneous generation and use of both electricity (or mechanical power) and thermal energy from a single fuel source. It is a technology that has been used for years by industries, commercial institutions, and municipalities that need both heat and electrical power. An analytical approach has been developed...
Resource Type:: Masters Thesis
Full Text:: ...................................... 5 1.3 Boiler Efficiency ............................. 7 2. LOAD PROFILES

A study of thermal stratification in the cold legs during the subcooled blowdown phase of a loss of coolant accident in the OSU APEX Thermal Hydraulic Testing Facility

Creator:: Wachs, Daniel M.
Abstract:: The phenomena of interest in this work is the thermal stratification which occurs during the early stages of a loss of coolant accident (LOCA) in the OSU APEX Thermal Hydraulic Test Facility, which is a scaled model of the Westinghouse AP600 nuclear power plant. Thermal stratification has been linked to...
Resource Type:: Masters Thesis
Full Text:: into the lower channel head of one SG. Figure 3-1 and Figure 3-2 present schematics of the APEX Test

Analysis and simulation of dual-source heat pumps with three-fluid evaporators

Creator:: Lee, Jai-hyo
Abstract:: When the ambient temperature drops, air-source heat pumps deliver less heating per unit of power input and usually cannot provide for the heating load. Therefore, dual-source heat pumps can offer an attractive alternative. In the context of this work, a dual-source heat pump operates as an air-source unit under normal...
Resource Type:: Dissertation
Full Text:: Statement 14 1.5 Procedure 16 2. THREE-FLUID EVAPORATOR MODEL 19 2.1 General Governing Equations 19 2.1.1

Evaluation of system-level performance of closed thermochemical energy storage systems for space heating

Creator:: Rivera, Kate E.
Abstract:: This study evaluates the system efficiency and energy-offsetting capabilities of a closed-cycle thermochemical energy storage (TCES) system. Current TCES research primarily focuses on material selection and reactor design but overlooks the practical limitations faced on a system level. Thus, this study investigates various TCES integration methods for providing building space...
Resource Type:: Masters Thesis
Full Text:: .......................................... 8 Chapter 2 : Literature Review

The experimental characterization of membrane behavior in two-phase gas extraction

Creator:: Cappello, Nicholas C.
Abstract:: Understanding the behavior of hydrophobic membranes is important for applications where separating a gas from a liquid-gas mixture is beneficial. For example, in-situ vapor extraction can be used in microscale heat sinks to improve heat transfer and flow stability. In this study, gas is experimentally evaluated flowing through flexible polytetrafluoroethylene...
Resource Type:: Masters Thesis
Full Text:: Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Background

ScholarsArchive@OSU

Three-dimensional, nonlinear viscoelastic analysis of laminated composites : a finite element approach

Experimental evaluation and numerical modeling of a water source heat pump evaporator

Testing and design procedures for electric propellant pumps for suborbital bi-propellant rockets

Processing of laser interferometric signals for small displacement measurements

An analysis of peripheral milling of finger-joints in ponderosa pine cut-stock

Computer model for estimating cogeneration system performance and economic feasibility

A study of thermal stratification in the cold legs during the subcooled blowdown phase of a loss of coolant accident in the OSU APEX Thermal Hydraulic Testing Facility

Analysis and simulation of dual-source heat pumps with three-fluid evaporators

Evaluation of system-level performance of closed thermochemical energy storage systems for space heating

The experimental characterization of membrane behavior in two-phase gas extraction

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