Flexural corrosion machine advance model
In one aspect, a material testing apparatus includes an enclosure configured to control one or more of humidity, pressure, or temperature. The enclosure includes a jaw, a plate, a first planar wall disposed on top of the plate, and a second planar wall parallel to the first planar wall separated by a vertical wall. A motor or actuator is disposed exterior to the enclosure, in which the motor includes a drive shaft coupled to a plurality of guide rods that are in contact with the vertical wall.
1 . A material testing apparatus comprising:
an enclosure configured to control one or more of humidity, pressure, or temperature, the enclosure comprising;
a jaw;
a plate;
a first planar wall disposed on top of the plate; and
a second planar wall parallel to the first planar wall separated by a vertical wall; and
a motor or actuator disposed exterior to the enclosure, wherein the motor comprises a drive shaft coupled to a plurality of guide rods that are in contact with the vertical wall.
2 . The apparatus of claim 1 , wherein the enclosure is configured to control each of humidity, pressure, and temperature using a fog nozzle.
3 . The apparatus of claim 1 , further comprising:
a first guide rod coupled at a first end with the vertical wall and coupled at a second end with a block; and
a second guide rod coupled at a first end with the vertical wall and coupled at a second end with the block.
4 . The apparatus of claim 1 , wherein the vertical wall comprises a plurality of jaws secured at a plurality of attachment locations on a face of the vertical wall.
5 . The apparatus of claim 4 , wherein each attachment location of the plurality of attachment locations are configured to mount each jaw of the plurality of jaws.
6 . The apparatus of claim 1 , wherein each the jaw comprises one or more securing screws disposed on a top portion and a bottom portion of the jaw.
7 . The apparatus of claim 6 , wherein the securing screws are symmetrically oriented along the jaw.
8 . The apparatus of claim 6 , wherein the first planar wall, second planar wall, and the vertical wall form an I-beam.
9 . A method for determining material performance comprising:
exposing a material system to a relative humidity of from 0% to 100% in a material testing apparatus and flexing the material system using a jaw in the apparatus at a first temperature in an enclosure of the apparatus, and a motor or actuator disposed exterior to the enclosure, wherein the motor comprises a drive shaft coupled to a plurality of guide rods that are in contact with a vertical wall connecting a first planar wall and a second planar wall located within the enclosure; and
operating the motor or the actuator at a second temperature different from the first temperature during the flexing,
the apparatus further comprising:
a jaw secured to the vertical wall comprising one or more securing screws oriented symmetrically along the jaw and configured to clamp the material system in the jaw.
10 . The method of claim 9 , wherein a first guide rod and a second guide rod are in contact with the vertical wall connecting the first planar wall and the second planar wall.
11 . The method of claim 10 , wherein a first guide rod is coupled at a first end with the vertical wall and coupled at a second end with a block, and a second guide rod is coupled at a first end with the vertical wall and coupled at a second end with the block.
12 . The method of claim 9 , wherein the jaw is configured to apply a uniform pressure to the material system.
13 . The method of claim 9 , wherein the securing screws are located on a top portion and a bottom portion of the material system.
14 . A material testing apparatus comprising:
an enclosure for controlling at least one of humidity, pressure, or temperature;
a plate within the enclosure;
a structural assembly on the plate comprising:
a first planar wall,
a second planar wall parallel to the first planar wall, and
a vertical wall extending between the first planar wall and the second planar wall;
at least one jaw mounted to the vertical wall;
a motor or actuator disposed exterior to the enclosure; and
a plurality of guide rods coupled to the motor or actuator and bearing against the vertical wall.
15 . The material testing apparatus of claim 14 , wherein the first planar wall, the second planar wall, and the vertical wall form a beam.
16 . The material testing apparatus of claim 15 , wherein the vertical wall forms a web of the beam and the first planar wall and the second planar wall form flanges of the beam.
17 . The material testing apparatus of claim 14 , wherein the plurality of guide rods contact opposing sides of the vertical wall.
18 . The material testing apparatus of claim 17 , wherein the guide rods extend through apertures in the vertical wall.
19 . The material testing apparatus of claim 14 , wherein the jaw is mounted to a face of the vertical wall between the first planar wall and the second planar wall.
20 . The material testing apparatus of claim 19 , wherein the jaw comprises securing screws disposed on a top portion and a bottom portion of the jaw.