Abstract: Cutting elements for earth-boring tools may include a cutting edge located proximate to a periphery of the cutting element. The cutting edge may be positioned and configured to contact an earth formation during an earth-boring operation. The cutting edge may include a first portion having a first radius of curvature and a second portion having a second, larger radius of curvature. The second portion may be circumferentially offset from the first portion.

Abstract: Cutting elements for earth-boring tools may include a cutting edge located proximate to a periphery of the cutting element. The cutting edge may be positioned and configured to contact an earth formation during an earth-boring operation. The cutting edge may include a first portion having a first radius of curvature and a second portion having a second, larger radius of curvature. The second portion may be circumferentially offset from the first portion.

Abstract: A cutting element comprises a cutting table of a polycrystalline hard material including a cutting face, a sidewall, and at least one peripheral cutting edge portion between the cutting face and the sidewall. A radius of curvature of the peripheral cutting edge portion is greater than a radius of curvature of at least another peripheral edge portion between the cutting face and the sidewall. An earth-boring tool may include one or more such cutting elements.

Abstract: A method of polishing a polycrystalline diamond compact (“PDC”) portion of a cutting element of an earth-boring tool, the cutting element comprising a PDC portion and a carbide portion. The method may comprise securing the cutting element in a receptacle, which receptacle may seal off the carbide portion of the cutting element from a working fluid comprising a carrier fluid and abrasive particles, enclosing the cutting element in a pressurized chamber, filling the pressurized chamber with the working fluid, directing a pressurized flow of the working fluid from at least one inlet toward at least one surface of the PDC portion of the cutting element and out at least one outlet, and providing relative motion between the receptacle and the at least one inlet with a motion mechanism. A polishing tool for polishing the PDC portion of at least one cutting element of an earth-boring tool.

Abstract: Methods of evaluating prototype cutting elements for earth-boring tools may involve generating first and second sets of virtual representations of cutting elements from first and second sets of used cutting elements. First and second sets of measures of damage corresponding to damage for each of the first and second sets set of virtual representations of cutting elements may be determined. A best-performing set of cutting elements from the first and second sets of used cutting elements according to the first and second sets of measures of damage may be identified by performing a statistical analysis.

Abstract: Cutting elements for earth-boring tools may include a superhard, polycrystalline material and a substrate adjacent to and secured to the superhard, polycrystalline material at an interface. The substrate may include a first region exhibiting a first coefficient of thermal expansion and a second region exhibiting a second, different coefficient of thermal expansion. The first region may be spaced from the superhard, polycrystalline material. The second region may extend from laterally adjacent to at least a portion of the first region to longitudinally between the first region and the superhard, polycrystalline material.

Abstract: A cutting element comprises a cutting table of a polycrystalline hard material including a cutting face, a sidewall, and at least one peripheral cutting edge portion between the cutting face and the sidewall. A radius of curvature of the peripheral cutting edge portion is greater than a radius of curvature of at least another peripheral edge portion between the cutting face and the sidewall. An earth-boring tool may include one or more such cutting elements.

Abstract: Cutting elements for earth-boring tools may include a superhard, polycrystalline material and a substrate adjacent to and secured to the superhard, polycrystalline material at an interface. The substrate may include a first region exhibiting a first coefficient of thermal expansion and a second region exhibiting a second, different coefficient of thermal expansion. The first region may be spaced from the superhard, polycrystalline material. The second region may extend from laterally adjacent to at least a portion of the first region to longitudinally between the first region and the superhard, polycrystalline material.

Abstract: Methods of evaluating prototype cutting elements for earth-boring tools may involve generating first and second sets of virtual representations of cutting elements from first and second sets of used cutting elements. First and second sets of measures of damage corresponding to damage for each of the first and second sets set of virtual representations of cutting elements may be determined. A best-performing set of cutting elements from the first and second sets of used cutting elements according to the first and second sets of measures of damage may be identified by performing a statistical analysis.