modulus

modulus Definition

modu·lus (mäj′ə ləs)

noun pl. -·u·li′-lī′

Math.
1. the absolute value of a complex number, computed by adding the squares of each part and taking the positive square root of the sum (i.e.: the modulus of a + bi is )
2. a quantity which gives the same remainders when it is the divisor of two quantities
3. the factor by which a logarithm to one base is multiplied to change it to a logarithm to another base
Physics a quantity expressing the response of a sample of material to an external stimulus, as mechanical stress: the response is usually expressed as a fractional change in the physical quantity being affected

Etymology: ModL < L: see module

modulus Usage Examples

Preposition: of

elasticity: Below is a table showing the variation modulus of elasticity of metals in crystal in different directions.
coating: Impact excitation is used to determine the Young's modulus of the coating independent of Poisson's ratio.

Converse of object

calculate: At least two tests were carried out at each temperature interval and the mean frequency value used to calculate the elastic modulus.

Adjective modifier

flexural: PPX 7125 has a flexural modulus of 1,340 MPa and an instrumented impact strength of 37 Nm at -30 degC.
elastic: A - Yes, by overcoming the elastic modulus, a new local memory can be induced.
tensile: Tensile modulus was reduced by 15 % in the same timescale.
bulk: We have managed to explain, and quantify, the origin of the surprising negative gradient of the bulk modulus in this model.
complex: The transfer function is the complex viscoelastic modulus of the interface.

Modifies a noun

silicone: Fix it to the base unit by bedding the sink onto beads of low modulus silicone.
blank: Good line speed is achieved by stiff, light, small diameter high modulus blanks.
carbon: Over 1km of ultrahigh modulus carbon fiber was used to strengthen the struts, totalling 1.5 tons in weight.
checking: And of course you should have a stringent modulus checking system in place.
measurement: However, for modulus measurements at low strain levels, uncertainties of better than ~ ± 1 % should be readily achievable.
m: The latter is used to decide which of the two arguments is the modulus m and which is the residue r.

Noun used with modifier

secant: The elastic modulus is defined as a secant modulus at service load condition.
shear: In reality the values of shear modulus G are much lower.
indentation: To obtain a reliable estimate of indentation modulus, each indentation experiment was repeated 20 times at 50 µm intervals.
bulk: For a gas, the adiabatic bulk modulus B = P, where P is the ambient pressure.
storage: The ratio of loss and storage modulus, tan d, is also reported.
distance: The distance modulus = the apparent magnitude - absolute magnitude.

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