# Expansion

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Related to Thermal expansion: Thermal expansion coefficient

## Expansion

Phase of the business cycle as it climbs from a trough toward a peak.

## Expansion

In a business cycle, a period of growth during which an economy moves from its trough to its peak. For example, if an economy dips to growth of -2.5% and then recovers to 3% growth, this period is called expansion. It is considered a normal and inevitable part of a business cycle following a recession or other contraction. Expansion is also called recovery.
References in periodicals archive ?
Instead of pulling your hair out trying to calculate the perfect amount of linear thermal expansion, the easiest way to deal with the problem is to heat the sprue, and if necessary, the mold base, up to the processing temperatures.
It is necessary to have a correct description of the non-anomalous contributions to deformation and the coefficient of thermal expansion [[beta].sub.L](T) to separate the anomalous contribution of deformation and to determine polarization P.
Composites with 15 wt% aluminium titanate showed maximum relative density, minimum coefficient thermal expansion (6.9A-10-6/C) and electrical conductivity (3.1A-10-4 Ohm.cm) compared to other composites.
Figure 2 shows the plot of thermal expansion coefficient versus chemical composition of binary zinc tellurite glasses at various temperatures and summarized in Table 1.
Kellogg's Design of Piping System has a section that also makes use of the guided cantilever method, but uses it to determine the flexibility of the system and the bending moment at the anchors These equations take the ratios of the leg lengths as well as the ratios of the estimated and allowable stress caused by thermal expansion. Calculations showed that the current piping arrangement is very flexible and only experiencing 40% of the allowable stress (15.000 PSI) at the anchor.
Although quartz inversion is not a problem at oven and stove top temperatures, its elimination should be a natural function of a lower thermal expansion clay body.
When soda is used as a flux it increases the thermal expansion of glass (Werner, 1971 and Robert, 1973).
Atlantic coast, identifying regional differences that arise from variations in subsidence and demonstrate the possible effects of ice-sheet melting and thermal expansion for sea level rise.
Ultimate causes of these failures may include chemical or electrical degradation of base materials, connection failures caused by thermal expansion mismatches, air gaps causing a reduction in heat transfer and oxidation caused by high temperature or mechanical failures.
The coefficients of linear thermal expansion can be calculated as a function of the properties of composite material components and fibres volume fraction.
Since the composites based on polymer matrix with fiber reinforcement are cured at elevated temperatures, a mismatch of thermal expansion between the matrix and the fiber introduces undesirable thermal stresses.
Thermal conductivity 28 / Thermal expansion 16; proceedings.

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