Mark Haney

Arkansas State University - Jonesboro | ASU · Department of Mechanical Engineering

This manuscript provides a new coupled thermo-chemo-mechanical computational model for titanium structures subjected to extreme loading and environment. The proposed model accounts for the formation of oxygen enriched (alpha-case) titanium, as well as the coupling effects between the response characteristics of mechanical and oxygen infiltration pr...

This article introduces the design process of a multi-functional skin structure for thermal energy transport and load bearing by using topology optimization. A single cell with periodic boundary conditions in the in-plane direction is used as a design space so that the final single-cell design can be repeated to construct a continuous sheet of mate...

Redundancy in structures can provide load carrying capacity for the structure under multiple load cases, damaged conditions, or different configurations. Since these different load paths arise due to some changes in conditions, they are also referred to as alternate paths. The damage tolerance of a structure is a function of its ability to develop...

Aircraft structure subjected to elevated temperature presents a challenging design environment as damaging thermal stress can result. Thermal stress in a structural component is typically alleviated by accommodating the thermal expansion. However, very little work has been done that directly addresses the situation where such a prescription for exp...

The paper presents the formulation and analysis of composite plates serving as STATs, i.e., spatially tailored advanced thermal structures where the distribution of the constituent phases varies throughout the surface as well as through the thickness. This is an extension of the well-known concept of functionally graded materials (FGM) and structur...

Thermo-elastic shells have long played an important role in high temperature structural applications. For example, high temperatures are generated on the outer-mold line (OML) of high speed aircraft due to aerodynamic heating effects as well as engine exhaust impingement. The OML is typically comprised of thin, plane-stress shells which transmit st...

A thermal protection system (TPS) is responsible for protecting a spacecraft's components from melting due to high reentry temperatures. In the design of TPS, both maximum thermal stress and minimum natural frequency must be considered due to the combined thermoacoustic environment inherent in high-speed vehicle applications. A multiobjective struc...

An optimal thermal protection system design for a spacecraft operating in extreme environments of thermal and acoustic loading is of significant importance for today's military space missions. These military space missions tend to push the envelope of the spacecraft's capabilities to the extreme, requiring robust performance of all key systems to a...

This paper presents a new evolutionary optimization method for the optimum dynamic performance of a three-dimensional thermal protection system. An optimum structure is obtained in this method by allowing finite elements to be added and removed. This evolutionary optimization method is developed by using two forms of sensitivities: one uses the Ray...

A thermal protection system (TPS) is responsible for protecting a spacecraft's components from melting due to high reentry temperatures. In the design of TPS, both maximum thermal stress and minimum natural frequency must be considered due to the combined thermoacoustic environment inherent in high-speed vehicle applications. A multiobjective struc...

A Thermal Protection System (TPS) is responsible for protecting the spacecraft's components from melting due to high re-entry temperatures. In the design of TPS, both maximum thermal stress and minimum natural frequency must be considered due to the combined thermo-acoustic environment inherent in high-speed vehicle applications. In this work, a mu...

The thermoelastic effect has been used to study stress distributions in a number of in-plane loading problems. Analysis of the temperature distribution has been largely limited to isotropic one-dimensional approximations with heat transfer through the thickness of the specimen. In sonic fatigue, specimens undergo fully reversed bending with a stres...

Rotating heatpipes make use of centrifugal effects to return id from the condenser to the evaporator without a wick. Daniels and al-Jumaily, Maezawa et al., and Marto used a Nusselt-type analysis for heat pipes rotating about a horizontal axis. Faghri et al. analyzed the vapor flow in a horizontal rotating heat pipe with a constant radius by numeri...