Courtney’s exams are conceptual. He famously asks: "Derive the equation for the lower yield point in a mild steel." If you only memorized the answer from a manual but never understood the dislocation locking mechanism, you will freeze.
If you are struggling, remember: Thomas Courtney wrote that book to make you think like a scientist. The pain of derivation is where the learning happens.
But if you are currently taking that course, you have probably found yourself staring at a problem set wondering, "Where did the 1/2 exponent come from?" or "How did they convert that dislocation density into a shear stress?"
McGraw-Hill (the publisher) provides an Instructor’s Manual only to verified professors. This manual is notoriously sparse—sometimes it only provides the final numerical answer, not the derivation steps.
This leads everyone to the same search query: