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Showing 1 to 20 of 172 for “"mixed-mode"”.
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Mixed mode fracture of concrete
The static mixed mode I and II fracture aspects of diagonal tension failure in reinforced concrete and prestressed concrete members were studied using a hybrid experimental-numerical analysis.
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Mixed-Mode Control Interfaces of Mobile Robot Teams
We propose applying various techniques and ideas, from video games, to the design of a task-level control interface for teams of mobile robots. The control interface, which visually resembles a video game and contains the functional elements of traditional robot control software, was designed and …
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Mixed-Mode Crack Propagation in Functionally Graded Materials
… for determining the behavior of a crack under mixed-mode loading conditions in brittle FGMs (e.g. ceramic/ceramic such as TiC/SiC). The mixed-mode SIFs and T-stress in isotropic and orthotropic FGMs are evaluated by means of the interaction integral method, in the form of an equivalent domain …
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Mixed-Mode Fracture Analysis Using a Conservation Integral
Made available in DSpace on 2014-12-14T14:42:18Z (GMT). No. of bitstreams: 1 8004309.pdf: 3007532 bytes, checksum: 2fdc8dc474fdf2ff2415791cb0c6f960 (MD5) Previous issue date: 1979
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Multi-Dimensional Mixed-Mode Hybrid Simulation, Control and Applications
… bridge deck are analyzed using a finite element model. The mixed-mode control capability is employed to impose on the RC pier simultaneous gravity loads in the axial direction and earthquake-induced displacements in the other directions. The experimental results show that the multi-dimensional …
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System identification and optimal control for mixed-mode cooling
… of an alternative cooling strategy-mixed-mode cooling-is demonstrated in this thesis to yield substantial savings in cooling energy consumption in many U.S. locations. A mixed-mode cooling strategy is one that relies on several different means of delivering cooling to the occupied …
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Mixed-Mode Cooling Design for Office Buildings in Arid Climates
… significant commercial building energy consumer. Mixed-Mode/hybrid cooling is an innovative approach that promotes energy and carbon emission savings while maintaining a satisfactory indoor environment. Such systems maximise the use of passive cooling strategies, operate low energy cooling …
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Design & Analysis of Mixed-mode Integrated Circuit for Pulse-shape Discrimination
… and DSP domains. We call this circuit topology a mixed-mode PSD system. We model this mixed-mode PSD system using Verilog-A and simulate its performance using Cadence Spectre with real detector waveform data as the input. We show that our mixed-mode PSD system is capable of discriminating between …
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Using far-field measurements for determining mixed-mode interactions at interfaces
… work is to develop a direct method to extract mixed-mode TSRs using only the far-field measurements. The first topic of the dissertation deals with extracting mixed-mode TSRs based on a combination of global and local measurements including load-displacement, crack extension, crack tip opening …
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Three-Dimensional Mixed-Mode Fracture of the Four-Point Shear Specimen
… fracture toughness of specimens undergoing pure mode I loading, often simplified by 2D assumptions of plane strain or plane stress. In reality, components have finite-thickness, and often see complex loading configurations. To study this complex behaviour, mixed-mode fracture specimens been …
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Dynamic Mixed-Mode Fracture of Bonded Composite Joints for Automotive Crashworthiness
An experimental evaluation of the mixed-mode fracture behavior of bonded composite joints is presented. Commonly used experimental techniques for characterizing the mode I, mixed-mode I/II, mode II, and mode III fracture behavior have been employed for the purpose of developing a fracture envelope …
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Characterization of Mixed-Mode Fracture Testing of Adhesively Bonded Wood Specimens
… the critical strain energy release rates (G) for mixed-mode (I/II) fracture of wood adhesive joints. The aims of the study were: (1) quantifying the fracture properties of two material systems, (2) analyzing the aspects that influence the fracture properties of bonded wood, (3) refining test …
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Crack Path Predictions Under Mixed Mode Loading In Aero-Structures: Measurements and Analysis
… combination of tension and torsion, resulting in mixed mode loading of flaws. When subjected to such conditions, the flaw is likely to undergo stable crack growth (SCG) in ductile materials. Understanding such fracture events in ductile materials is an important component of structural integrity …
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Phase-field modeling of fracture: regularization length insensitivity and mixed mode ductile fracture
… The development of quantitative computational models for predicting crack initiation and propagation has remained an important area of research because of the complexities that arise from topologically complex crack growth and interactions with other inelastic phenomena. Among computational …
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Fracture Characteristics of Asphalt Concrete in Mode I, Mode II, and Mixed-Mode
… above were used to develop and validate a new Mode II test for asphalt concrete. No previous literature was found that attempted to capture Mode II fracture energy in asphalt concrete, so a test was developed from an extensive review of Mode II tests in the fields of metal, plastic, and PCC. …
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Three-dimensional mixed mode linear elastic fracture mechanics analysis using domain interaction integrals
Three-dimensional mixed-mode linear elastic fracture mechanics analysis is presented using domain interaction integrals. An out-of-plane sinusoidal crack was analyzed using a commercially available finite element package to extract the stress intensity factors and the J-Integral. The results were …
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Mixed Mode Latent Class Clustering: An Examination of Fit Index Performance for Identifying Latent Classes
… latent class clustering (LCC) or finite mixture models. The goal of LCC is to classify subjects from a large heterogeneous set of cases into homogeneous subgroups when the number of subgroups is unknown a priori. Despite the advantages of LCC over the traditional clustering, model selection aided …
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Evaluating mode differences in longitudinal data. Moving to a mixed mode paradigm of survey methodology
Collecting and combining data using multiple modes of interview (e.g., face-to- face, telephone, Web) is becoming common practice in survey agencies. This is also true for longitudinal studies, a special type of survey that applies questionnaires repeatedly to the same respondents. In this PhD I …
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Experimental and Numerical Methods for Characterizing the Mixed-Mode Fracture Envelope for a Tough Epoxy
… Fracture can occur in one of three different modes, or in some combination. Many practical adhesive joints fail in the mixed-mode region involving both opening (mode I) and shearing (mode II) displacements. Mode I fracture was evaluated with double cantilever beam (DCB) tests, mode II fracture …
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