Xuzhou Construction Machinery Group (China)

Egg Drop Problems: They Are All They Are Cracked Up to Be!

We illustrate how to invite and excite students about research by exploring higher-dimensional generalizations of the classical egg drop problem, in which the goal is to locate a breaking point using the fewest number of trials. Beginning with the one-dimensional case, we prove t...

Microstructural Evolution, HAZ Softening and Failure Behavior of Large-Diameter QT/AR 1045 Steel CDFW Joints

As piston rods for excavator boom hydraulic cylinders shift from integral forging to welded assemblies of separately manufactured rod bodies and rod heads, joint reliability becomes critical to load-bearing performance. In this study, 60 mm diameter quenched-and-tempered/as-rolle...