۴D printing utilizing bending thermal deformation of ۳D printed PLA specimens

Four-dimensional (۴D) printing is a combination of three-dimensional (۳D) printing and time which is able tomanufacture a smart structure with the merge of smart materials and stimuli in the process of ۳D printing throughout thetime. In this study, the effect of print orientations is investigated on the bending thermal deformation of ۳D printedPoly lactic acid (PLA) specimens. Four different layups, i.e., [۰]۱۸, [۹۰]۱۸, [۰۹/۹۰۹] and [۹۰۹/۰۹] were tested above the glasstransition temperature (Tg) of PLA, i.e., ۶۰ °C at the oven. The experimental results illustrated that by changing thestacking sequence of printing angle, the deformation can be controlled in certain orientations. Among different layups,[۰۹/۹۰۹] layup suggests the most bending deformation.

کلیدواژه ها:

۳D printing ، ۴D printing ، Bending deformation ، PLA