Clogging occurs during mechanical tunneling with a Tunnel Boring Machine (TBM) because of adhesion of clayey soils to the cutter head and conveyor system. The present study examined the effects of water and sand contents on clogging...

The present article proposes the closed-form solution for analytical prediction of stability lobes in

internal turning process. The passively damped boring bar is modeled as a cantilevered Euler-Bernoulli

beam with constant cross...

This articlepresentsamodeltosimulatethedynamicsofboringprocess.Inboringoperationsthe

boringbarshouldbelongandslender;thereforeitiseasilysubjectedtovibrations.Toolvibrations

result inreducedtoollife,poorsurf ...

Drilling, blasting and mechanical methods using road headers or tunnel boring machines (TBMs) are among the methods used for underground excavation of rock and soil. The interaction between the tools used and the ground leads to fragmentation...

balance between the rate of positive

energy generated by the actuator and the rate of destructive energy absorbed by the boring bar due to chatter phenomenon, such

that the stability of cutting process is remarkably improved with minimized...

This article presents a methodology to predict the cutting force of boring process. The cutting force is

represented by tangential Ft, thrust Fh and lateral Fl components. Cutting force is correlated to chip area

and cutting edge...

In this article, adaptive inverse control of chatter vibrations in internal turning process is

addressed. The active boring bar is composed of a slender steel cutting tool, an electrodynamic

shaker as controllable actuator and an IEPE...