Lecture Notes on Trusses, Material Properties, and Corrosion

Flashcards summarizing key concepts from the lecture notes on trusses, material properties, and corrosion.

Truss members are assumed to be joined by __ connections.

pinned

External forces can only be applied at the __ joints, never between the joints.

truss

Truss member forces can only be __, either tension or compression.

axial

A __ beam is supported on both ends and restrained from rotation.

fixed

The yield point indicates where elastic behavior ends and __ begins.

plasticity

The maximum stress a material can endure before breaking is called __ tensile strength.

ultimate

Resilience is the area under the stress-strain curve within the __ limit.

proportionality

In a stress-strain diagram, stress is applied and __ is afterwards.

strain

Yield strength is the maximum stress at which a material will __ plastically.

deform

The ability of a material to absorb energy and plastically deform without fracture is called __.

toughness

The __ is the measure of a material's resistance to changing shape elastically.

modulus of elasticity

Permeability is the ability to allow or resist the __ of liquid or gas.

entering

The __ limit is the stress level below which a material will never break, no matter how many times the stress is repeated.

endurance

Flexibility is the ability of a material to __ shape.

change

The destructive and unintentional degradation of a material caused by its environment is called __.

corrosion

Zinc acts as an anode and __ to the iron or steel in galvanizing.

corrodes

A __ beam extends beyond its support on one end.

overhanging

A __ is a projecting beam fixed only at one end.

cantilever

A __ diagram should always start and end at zero, mimicking balanced forces.

shear force

Tensile strength is the maximum amount of __ stress a material can withstand before it breaks.

pulling

Stress divided by strain gives __ or Young's Modulus.

modulus of elasticity

In a funicular polygon, the closing string helps to project that line onto the __ ray diagram.

force

Fatigue strength refers to how much __ stress a material can handle before it eventually breaks.

repeated

Two or more forces that act on the same point at the same time are known as __ forces.

concurrent