@book{c41ba441fffc421eae3a7b040580be41,
title = "Improved PID control for triaxial testing liquefied specimen",
abstract = "Using a frictionless triaxial apparatus, sand specimens can be tested at relatively high axial strains, even while liquefying. However, liquefying specimens have extremely nonlinear stiffness, thus standard PID control does not perform well. To maintain control over applied loads, the PID controller was modified to adapt to disturbed soil states. The proposed methods expand the scope of testing towards options which are otherwise inaccessible by triaxial testing. ",
keywords = "Triaxial apparatus, Sand behavior, Liquefaction, Strain space, Triaxial apparatus, Sand behavior, Liquefaction, Strain space",
author = "Tomas Sabaliauskas and Ibsen, {Lars Bo}",
year = "2017",
language = "English",
series = "DCE Technical reports",
publisher = "Department of Civil Engineering, Aalborg University",
number = "232",
address = "Denmark",
}