Damping as Measure of Damage in Composites
The increase of damping with damage induced by static and fatigue loading of a glass fiber reinforced composite has been measured and is shown to be greater than the corresponding decrease...

Estimating Soil Water Retention from Soil Properties
Soil water retention characteristics are needed to describe the movement and storage of water in soils. Since conventional laboratory methods of obtaining these are expensive and time...

One Uses His Umbrella When It Rains
The engineering profession unity movement is reviewed, with a brief explanation of the reasons for forming the American Association of Engineering Societies. A brief historical background...

Minority and Female Students in Engineering
It appears that the national demand for engineers will increase in future years. To meet this demand, besides traditional prospective engineering students, minorities and women have to...

Example Cost of 3-D FEM for Underground Openings
The use of three-dimensional finite element methods for the analysis of underground structures has been limited in practice, partially because of their supposed high costs. A more quantitative...

The Ethics of Serving Two Masters: An Engineer's Dilemma
The question posed is Does the engineer serve two masters——the employer and the public welfare? Through analogies of the decision making process to common everday problems and a look at...

Numerical Models for Track Support Structures
Three finite element formulations based on one-, two-, and three-dimensional idealization for analysis of railroad track support structures are presented with major emphasis on the three-dimensional...

Alongwind Response Estimation: Closed Form Solution
The problem of dynamic alongwind response of structures to forces induced by atmospheric turbulence is treated in this paper. Starting from the classical formulation, the study analyses...

Tension Stiffening Concept Based on Bond Slip
Consideration of tension stiffening in reinforced concrete panels by means of so-called tension stiffening factors, appearing in total and incremental equilibrium equations, has proved...

Considerations in the Undisturbed Sampling of Sands
The effect of sampling disturbance on the cyclic strength characteristics of sands is investigated by sampling from deposits of known dynamic characteristics prepared in the laboratory....

Considerations in Modeling Activated Sludge Process
Mathematical modeling of the activated sludge process is examined both from a unit process viewpoint and as an integral component of plant-wide mass balance models. Two modeling approaches...

Lateral Stability of I-Beams with Partial Support
The lateral torsional buckling behavior of I beams with tension flange restraint is described. Tension flange restraint occurs frequently in continuous beams and indeterminate structures....

Full-Scale Tests on Single-Tapered Glulam Members
Analytical and experimental studies were conducted on Glulam members with tapered configuration. Full-scale flexural tests were conducted under working loads. Three different geometries...

Vertical Structure of Internal Modes in Stratified Flows
An analytic solution of the linearized two-dimensional equations for stably stratified flows driven by a surface shear stress which is periodic in the horizontal direction, and in time,...

Buckling of Cooling Towers
The main goal of this study is to provide a clearer basis for judging the succeding safety of wind-loaded cantilever hyperboloidal shells. New predictions for cooling tower buckling are...

Seismic Design of Steel Buildings
An approach for the ultimate limit state design of steel buildings against the credible severest earthquake is presented on the basis of energy concept. The safety of a structure is judged...

Safety Checking Formats for Limit States Design
The growing need for a unified approach to structural design for different construction materials and technologies is met by the limit states design approach. Several standards-writing...

Investigation of Concrete: PMC Composite
This paper presents the results of an experimental investigation on the behavior of concrete - Polymer Modified Concrete two-layered composite beams (PMC). Sixteen simply supported beam...

Concepts and Instruments for Improved Monitoring
It is shown that a good instrumentation strategy, based on reliable measurements of displacements and pressures, is necessary for monitoring the safety and the behavior of civil works...

Porous Pavement: Research, Development, and Demonstration
This paper discusses the U.S. Environmental Protection Agency's porous pavement research program along with the economies, advantages, potential applications, and status and...

 

 

 

 

Return to search