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Has there been evidence of ejected material striking the fuselage or other parts of an aircraft forward of the engine itself?

Which of the various forces acting on rotor blades dominates the trajectory of pieces in the case of a blade failure?

Other than rotor break-up, what kinds of engine malfunction typically cause component separation, and in what direction(s) is material ejected?

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For debris ejection out of the engine, the failure of the engine and the failures that follow that create debris; the design criteria is that the failures must be contained in the cowling and the debris exits through the exhaust. Here is the link to the FAA Advisory Circular for designing for catastrophic failure: AC 20-128A

Here is another link that is more devoted to prior uncontained engine failure.

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    $\begingroup$ Debris should be contained (and there is a check for this to certify the engine). However they are not always, so the accidents, I think the question is about the latter cases, not what is expected (to some extent). $\endgroup$ – mins Jun 26 '17 at 12:19
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When the fan disk failed during UA232, there was damage forward of the fan disk itself. See also the associated damage image. While this was not forward of the engine nacelle, it seems to address the intent of the question.

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