A method performed by one or more data processing systems for determining differences in fiber orientations for designs of fiber composite manufacturable parts, comprising: a1) receiving a first fiber orientation field, in a data processing system, corresponding to a fiber-composite manufacturable part, the first fiber orientation field having a plurality of field rosettes each having a reference point and a corresponding direction vector, a2) wherein a field rosette corresponds to data that defines a fiber orientation at a particular reference point on a model, simulation, or as manufactured measurements of the fiber-composite manufacturable part; b) receiving a second fiber orientation field, in the data processing system, corresponding to the fiber-composite manufacturable part, the second fiber orientation field also having a plurality of field rosettes each having a reference point and a corresponding direction vector; c1) identifying a first field rosette in the first fiber orientation field and a second field rosette in the second fiber orientation field that have corresponding reference points (312/322) on the manufacturable part, c2) said identifying including the interpolating of at least one of the first field rosette or the second field rosette from at least one other field rosette in the respective first fiber orientation field or second fiber orientation field; d) comparing the first field rosette to the second field rosette to identify a fiber orientation difference between the first fiber orientation field and the second fiber orientation field at the corresponding reference point (312/322); and e1) storing the fiber orientation difference as associated with the manufacturable part, e2) said storing being performed such that the fiber orientation difference is usable to alert a user to discrepancies in fiber orientations between a model of the manufacturable part and as manufactured measurements of the manufacturable part, which exceed design specifications; e3) wherein the first fiber orientation field is received from a finite element model of the manufacturable part; and e4) wherein the second fiber orientation field is received as measurements of the manufacturable part as manufactured; wherein e5) in said step e2) the fiber orientation differences are compared with the design specifications and the fiber orientation differences above the design specifications are displayed to the user to validate that the deviation of as-manufactured orientations from prescribed finite element orientations do not exceed the design specifications; a1) receiving a first fiber orientation field, in a data processing system, corresponding to a fiber-composite manufacturable part, the first fiber orientation field having a plurality of field rosettes each having a reference point and a corresponding direction vector, a2) wherein a field rosette corresponds to data that defines a fiber orientation at a particular reference point on a model, simulation, or as manufactured measurements of the fiber-composite manufacturable part; b) receiving a second fiber orientation field, in the data processing system, corresponding to the fiber-composite manufacturable part, the second fiber orientation field also having a plurality of field rosettes each having a reference point and a corresponding direction vector; c1) identifying a first field rosette in the first fiber orientation field and a second field rosette in the second fiber orientation field that have corresponding reference points (312/322) on the manufacturable part, c2) said identifying including the interpolating of at least one of the first field rosette or the second field rosette from at least one other field rosette in the respective first fiber orientation field or second fiber orientation field; d) comparing the first field rosette to the second field rosette to identify a fiber orientation difference between the first fiber orientation field and the second fiber orientation field at the corresponding reference point (312/322); and e1) storing the fiber orientation difference as associated with the manufacturable part, e2) said storing being performed such that the fiber orientation difference is usable to alert a user to discrepancies in fiber orientations between a model of the manufacturable part and as manufactured measurements of the manufacturable part, which exceed design specifications; e3) wherein the first fiber orientation field is received from a finite element model of the manufacturable part; and e4) wherein the second fiber orientation field is received as measurements of the manufacturable part as manufactured; wherein e5) in said step e2) the fiber orientation differences are compared with the design specifications and the fiber orientation differences above the design specifications are displayed to the user to validate that the deviation of as-manufactured orientations from prescribed finite element orientations do not exceed the design specifications;