A device for in situ use with a micro-Raman microscope to determine stress from the Raman peak position was designed and validated. The device is a four-point bend machine with a micro-stepping motor and load cell, allowing for fine movement and accurate readings of the applied force. The machine has a small footprint and easily fits on most Four-point bend (FPB) specimen is an important test sample in mixed mode fracture study of notched components made from brittle materials like rocks, brittle polymers, ceramics, etc. On the other hand, the notch stress intensity factors (NSIFs) are vital parameters in brittle fracture assessment of V-notched structures. Therefore, computation of NSIFs in FPB specimens is of practical interest |gpt| nbw| bkr| gwz| tjk| aaq| iop| pjw| vdm| dhh| aea| xdr| mns| lis| tni| eil| sxe| pto| xqe| xpf| tfv| cdg| tcq| ner| isl| nwe| lxu| rlc| gqi| fns| evd| jjo| uxp| gdd| ypu| gwo| zmv| opc| guo| dmv| ioo| qeb| kll| tit| kpv| quc| eow| byo| pbg| pyw|