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US 10,703,048 B2Granted
Plasticity induced bonding
AssigneeMassachusetts Institute of Technology
InventorsNikhil Padhye, David Moore Parks, Bernhardt Levy Trout, Alexander H. Slocum
Life of this patent
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Abstract
Methods and apparatuses for bonding polymeric parts are disclosed. Specifically, in one embodiment, the polymeric parts are bonded by plastically deforming them against each other while they are below the glass transition temperatures.
Claims13
An apparatus comprising:
- a pressing element comprising a roller, the pressing element constructed and arranged to apply a compressive force to a first part in contact with a second part in order to apply a substantially plane strain plastic deformation to the first part and the second part;
- and
- a controller in electrical communication with the pressing element, wherein the controller controls the pressing element to apply a compressive stress to the first part and the second part that is greater than a yield strength and less than an ultimate compressive strength of both the first part and the second part, and wherein the controller controls the pressing element to plastically deform the first part and the second part to a compressive plastic strain between about 1% and a compressive strain limit of both the first part and the second part.
An apparatus comprising:
- a pressing element constructed and arranged to apply a compressive force to a first part in contact with a second part;
- and
- a controller in electrical communication with the pressing element, wherein the controller controls the pressing element to apply a compressive stress to the first part and the second part that is greater than a yield strength and less than an ultimate compressive strength of both the first part and the second part, wherein the controller controls the pressing element to plastically deform the first part and the second part to a compressive plastic strain between about 1% and a compressive strain limit of both the first part and the second part, and wherein the controller controls the pressing element to maintain a temperature of the first and second parts below their respective glass transition temperatures.
An apparatus comprising:
- a pressing element constructed and arranged to apply a compressive force to a first part in contact with a second part;
- a controller in electrical communication with the pressing element, wherein the controller controls the pressing element to apply a compressive stress to the first part and the second part that is greater than a yield strength and less than an ultimate compressive strength of both the first part and the second part, and wherein the controller controls the pressing element to plastically deform the first part and the second part to a compressive plastic strain between about 1% and a compressive strain limit of both the first part and the second part;
- and
- one or more sensors associated with the pressing element and in electrical communication with the controller, wherein the controller controls the applied compressive stress based on input from the one or more sensors.
1 more element
Dependencies are inferred from the claim text.