Quasi-static and dynamic fracture behavior of lead zirconate titanate: A study of poling and loading rate

Combined electromechanical dynamic fracture behavior of lead zirconate titanate (PZT)

“…All cases exhibited predominantly Mode‐I fracture. For the sake of brevity, the analysis is summarized here, though the reader is referred to previous work 16 for a more comprehensive breakdown of the methods used to obtain results. In nominally brittle solids, fracture response based on the stress intensity factor (SIF) considers small displacements and plane‐stress assumptions.…”

“…Sample material and electric properties, including approximate coercive field, are listed in Table 1. Material preparation was performed in a method similar to previous work by Mendoza et al 16 . and is briefly outlined here.…”

“…Sample material and electric properties, including approximate coercive field, are listed in Table 1. Material preparation was performed in a method similar to previous work by Mendoza et al 16 and is briefly outlined here. Depoled specimens were produced in-house by heating the poled samples up to 500 and then sharpened with a razor-blade to create the precrack.…”

“…Some experimental work in the dynamic fracture behavior of piezoelectric materials and has been conducted, [13][14][15] although these methods typically involve point-measurement techniques that are subject to more rigid 1-D assumptions. Only one recent publication utilizes full-field metrology, 16 which is unique in that it captures the evolution of kinematic fields over the entire surface of the sample, thus providing a richer data field.…”

“…Dynamic fracture toughness values for PZT specimens under purely mechanical loading and combined electromechanical loading. Results from previous work by Mendoza et al16 are included for comparison cos𝜃 𝑘 + 𝑇 𝑦 sin𝜃 𝑘 + 𝑅 𝑟𝑘 ,…”