Method for testing at least one portion of a component, in particular a component of a turbomachine, comprising at least the following steps: a) providing a raw component; b) producing at least the portion from the raw component by machining the raw component using at least one tool and detecting, by means of at least one force sensor, at least one force profile of at least one force acting on the at least one tool during the machining process; c) testing whether at least one deviation (22, 24) of the at least one force profile from at least one predetermined target profile of the at least one force profile is present, the at least one deviation (22, 24) characterizing at least one material defect (28, 36) contained in an unmachined segment of the portion, the at least one force profile being compared with at least one further force profile that characterizes a machining process of at least one further component, and the at least one deviation (22, 24) in the at least one portion being thereby evaluated, characterized in that the at least one further component has at least one further material defect similar to the at least one material defect (28, 36), and at least one further deviation of the at least one further force profile from the at least one predetermined target profile being present, and, by comparing the at least one force profile with the at least one further force profile, a position of the at least one material defect (28, 36) in the unmachined segment being determined at least approximately, according to which it is determined whether, when the component is used as intended, the material defect is in a component region subject to high loads or in a component region subject to low loads. a) providing a raw component; b) producing at least the portion from the raw component by machining the raw component using at least one tool and detecting, by means of at least one force sensor, at least one force profile of at least one force acting on the at least one tool during the machining process; c) testing whether at least one deviation (22, 24) of the at least one force profile from at least one predetermined target profile of the at least one force profile is present, the at least one deviation (22, 24) characterizing at least one material defect (28, 36) contained in an unmachined segment of the portion, the at least one force profile being compared with at least one further force profile that characterizes a machining process of at least one further component, and the at least one deviation (22, 24) in the at least one portion being thereby evaluated, characterized in that the at least one further component has at least one further material defect similar to the at least one material defect (28, 36), and at least one further deviation of the at least one further force profile from the at least one predetermined target profile being present, and, by comparing the at least one force profile with the at least one further force profile, a position of the at least one material defect (28, 36) in the unmachined segment being determined at least approximately, according to which it is determined whether, when the component is used as intended, the material defect is in a component region subject to high loads or in a component region subject to low loads.