A locking isolator, comprising: one or more joints configured to transition between a clearance fit state and an interference fit state in response to a change in temperature; and a dampener, configured to attenuate transmission of vibration through the one or more joints when the one or more joints are in the clearance fit state, wherein each joint of the one or more joints comprises a first portion, having a first coefficient of thermal expansion and a second portion, having a second coefficient of thermal expansion that is different than the first coefficient of thermal expansion; wherein the first portion and the second portion are fixed relative to each other below a transition temperature and the first portion and the second portion are movable relative to each other above the transition temperature; or wherein the first portion and the second portion are movable relative to each other below a transition temperature and the first portion and the second portion are fixed relative to each other above the transition temperature; the locking isolator further comprising a heating element, which is configured to heat the one or more joints above of the transition temperature and/or a cooling element which is configured to cool the one or more joints below the transition temperature; wherein the locking isolator further comprises a piezoelectric generator, configured to generate an electric power in response to mechanical strain caused by shock and vibration forces acting on the locking isolator, the piezoelectric generator being in electrical communication with the heating element and/or the cooling element whereby the electric power generated by the piezoelectric generator is used to energize the heating element and/or the cooling element. one or more joints configured to transition between a clearance fit state and an interference fit state in response to a change in temperature; and a dampener, configured to attenuate transmission of vibration through the one or more joints when the one or more joints are in the clearance fit state, wherein each joint of the one or more joints comprises a first portion, having a first coefficient of thermal expansion and a second portion, having a second coefficient of thermal expansion that is different than the first coefficient of thermal expansion; wherein the first portion and the second portion are fixed relative to each other below a transition temperature and the first portion and the second portion are movable relative to each other above the transition temperature; or wherein the first portion and the second portion are movable relative to each other below a transition temperature and the first portion and the second portion are fixed relative to each other above the transition temperature; the locking isolator further comprising a heating element, which is configured to heat the one or more joints above of the transition temperature and/or a cooling element which is configured to cool the one or more joints below the transition temperature; wherein the locking isolator further comprises a piezoelectric generator, configured to generate an electric power in response to mechanical strain caused by shock and vibration forces acting on the locking isolator, the piezoelectric generator being in electrical communication with the heating element and/or the cooling element whereby the electric power generated by the piezoelectric generator is used to energize the heating element and/or the cooling element.