Search results
Results from the WOW.Com Content Network
The weldability, also known as joinability, [1] of a material refers to its ability to be welded. Many metals and thermoplastics can be welded, but some are easier to weld than others (see Rheological weldability). A material's weldability is used to determine the welding process and to compare the final weld quality to other materials.
Economists commonly use the term recession to mean either a period of two successive calendar quarters each having negative growth [clarification needed] of real gross domestic product [1] [2] [3] —that is, of the total amount of goods and services produced within a country—or that provided by the National Bureau of Economic Research (NBER): "...a significant decline in economic activity ...
Each of the previous components of engineering economics is critical at certain junctures, depending on the situation, scale, and objective of the project at hand. Critical path economy, as an example, is necessary in most situations as it is the coordination and planning of material, labor, and capital movements in a specific project.
The term "option value" and its theoretical underpinnings as a non-user benefit were initially developed in 1964 by Burton Weisbrod. [12] It was posited as an element of benefit distinct from the traditional concept of consumer surplus, and it depended on three factors: (1) uncertainty about future need for the asset, (2) irreversibility or high cost of replacement if the asset is lost, and (3 ...
The study of Engineering Economics in Civil Engineering, also known generally as engineering economics, or alternatively engineering economy, is a subset of economics, more specifically, microeconomics. It is defined as a "guide for the economic selection among technically feasible alternatives for the purpose of a rational allocation of scarce ...
Real-world economics is a school of economics that uses an inductive method to understand economic processes. It approaches economics without making a priori assumptions about how ideal markets work, in contrast to what Nobel Prize-winning economist, Ronald Coase , referred to as "blackboard economics" and its deductive method .
For example, welding semi-crystalline to compatible semi-crystalline material and amorphous to compatible amorphous material have exhibited the best results. [5] While a rheological analysis can provide reasonable insight to a material's weldability, [ 2 ] in most cases production welding is typically prefaced with a series of tests to verify ...
Common additives and filler will often alter the weldability of polymers. These additions can make the weld process more difficult, or change the intended properties of the weld. A note on composite materials, fiber reinforced for example. The reinforcement material will not cross the weld joint, so the intended bulk material properties will ...