@phdthesis{Keller2005, author = {Keller, J{\"u}rgen}, title = {Micro- and nanoscale characterization of polymeric materials by means of digital image correlation techniques}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-000000706}, school = {BTU Cottbus - Senftenberg}, year = {2005}, abstract = {This thesis comprises the development, accuracy testing and application of the so-called nanoDAC method (nano Deformation Analysis by Correlation). The method combines scanning probe microcopy (SPM) images and digital image correlation (DIC) to derive an in-situ deformation measurement technique. The results are full-field 2D displacement fields with nanometer resolution. The method can be performed on bulk materials, thin films, and on microelectronic components. A thermosetting polymer material typically applied in microelectronics systems serves as an example to emphasize the capability of the method. Crack tip opening fields of a compact tension (CT) specimen are experimentally determined by means of nanoDAC and the obtained fields act as the basis for the extraction of the stress intensity factor as a fracture mechanical property. In addition finite element analyses are carried out and an adaptation strategy between experimental and numerical results is developed.}, subject = {Duroplast; Deformationsmessung; Nanometerbereich; Rastersondenmikroskopie; Bildkorrelation; Nanomechanics; AFM; NanoDAC; Defomation measurement; Crack tip field}, language = {en} }