Continuum-Damage Mechanics Based Fracture Toughness of Microstructures in Structural Steel Weldments — Experimental Dataset

Continuum-Damage Mechanics Based Fracture Toughness of Microstructures in Structural Steel Weldments — Experimental Dataset Related publication: Tu, M., Jhunjhunwala, A., Skiadopoulos, A., Morrison, M., Kanvinde, A., "Continuum-Damage Mechanics Based Fracture Toughness of Microstructures in Structural Steel Weldments" Authors: - Matthew Tu - Graduate Research Assistant, Department of Structural Engineering, University of California, San Diego, La Jolla, CA 92093, USA, email: [e-mail] - Aditya Jhunjhunwala - Visting Assistant Professor, Lyles School of Civil and Construction Engineering, Purdue University, West Lafayette, IN 47907, USA, email: [e-mail] - Andronikos Skiadopoulos - Postdoctoral researcher, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland, email: [e-mail] - Machel Morrison - Assistant Professor, Department of Structural Engineering, University of California, San Diego, La Jolla, CA 92093, USA, email: [e-mail] - Amit Kanvinde - Professor, Department of Civil and Environmental Engineering, University of California, Davis, Davis, CA 95616, USA, email: [e-mail] License: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) Overview This dataset contains force-displacement measurements and complementary triaxiality-plastic strain simultaion predictions from monotonic tensile tests on specimens machined from Gleeble-simulated heat affected zone (HAZ) regions of three base materials. The experiments support constitutive modeling and fracture characterization of representative HAZ microstructural regions resulting from a typical flux cored arc weld for these three steels. Three specimen types were tested across six HAZ microstructural regions, in addition to the as-received base metal condition, for three base materials. Additionally, the as-deposited weld metal material from a weld assembly made from E70T6 self-shielded FCAW electrode was tested in the same manner. This multipass CJP butt-splice weld assembly was constructed with the M1 material reported herein. A total of **92 specimens** are included. Repository Structure - README.md - docs/ - specimen_geometries.pdf # All Specimen Geometries - M1/ # Material ID - M2/ - M3/ - WM/ # Microstructural Zone - CGHAZ/ - RGHAZ/ - IRHAZ/ - FGHAZ/ - ICHAZ/ - SCHAZ/ - BM/ - Coupon/ # Specimen Type - CNT-LN/ - CNT-SN/ - GP/ - <specimen_id>_force-displ.csv # Tabular Data - <specimen_id>_triax-ep.csv - <specimen_id>_force-displ.pdf # Plotted Data - <specimen_id>_triax-ep.pdf The first layer of folder names encode the material ID. Full chemical composition data is provided in the related publication: Folder Name Description M1 M1 Material: A992 (lower range of ASTM-permitted carbon composition) Steel M2 M2 Material: A992 (higher range of ASTM-permitted carbon composition) Steel M3 M3 Material: A572 Gr 50 (345 MPa) (lower range of ASTM-permitted carbon composition) Steel The second layer of folder names encode the microstructural region. Folder Name Microstructural Region Name CGHAZ Coarse Grain Heat Affected Zone (HAZ) RGHAZ Refined Grain HAZ IRHAZ Intercritically Reheated HAZ FGHAZ Fine Grain HAZ ICHAZ Intercritical HAZ SCHAZ Subcritical HAZ BM Base Metal WM Weld Metal The third layer of folder names encode the specimen type: Folder Name Specimen Type Coupon Axisymmetric Smooth Tensile Coupon CNT-LN Axisymmetric Circumferentially Notched Test Specimen - Long Notch CNT-SN Axisymmetric Circumferentially Notched Test Specimen - Short Notch GP Groove Plate File names encode all relevant information: Data Type Naming Convention Example Tabular Data <material>_<microstructure>_<specimen_type>_<test_id>_<data_type>.csv M1_CGHAZ_GP_1_force-displ.csv Plotted Data <material>_<microstructure>_<specimen_type>_<test_id>_<data_type>.pdf M2_RGHAZ_CNT-LN_2_triax-ep.pdf Specimen Types All specimen geometries can be found in `docs/specimen_geometries.pdf`. CNT — Circumferentially Notched Tensile Cylindrical specimens with a circumferential notch, machined from simulated, distinct microstructural regions. See `docs/specimen_geometries.pdf` (b) and (c) for geometry of the long notch (LN) and short notch (SN) configurations, respectively. Initial extensometer gage length: 25 mm. All CNT tests were loaded monotonically in tension at 0.200 mm/min. GP — Groove Plate Rectangular plate specimens with a symmetric groove (double-sided notch), machined from simulated, distinct microstructural regions. See `docs/specimen_geometries.pdf` (d) for geometry. Initial extensometer gage length: 8 mm. All GP tests were loaded monotonically in tension at 0.253 mm/min. Coupon — Tensile Coupon Smooth axisymmetric coupons machined from simulated, distinct microstructural regions. See `docs/specimen_geometries.pdf` for specimen geometry. Initial extensometer gage length: 8 mm. All coupon tests were loaded monotonically in tension at 0.257 mm/min. Specimen Inventory Specimen Geometry Material Microstructural Region Coupon CNT-LN CNT-SN GP M1 CGHAZ 1 2 2 1 RGHAZ 1 2 2 1 IRHAZ 1 2 2 - FGHAZ - - - 1 ICHAZ 1 2 2 1 SCHAZ 1 2 2 - BM 1 2 2 - WM 1 2 2 - M2 CGHAZ 1 2 2 1 RGHAZ 1 2 2 1 IRHAZ - 1 - 1 FGHAZ - 1 - 1 ICHAZ 1 1 1 1 SCHAZ 1 2 2 - BM 1 2 2 - M3 CGHAZ 1 2 2 1 RGHAZ - 2 2 1 IRHAZ - 1 1 - FGHAZ - - - - ICHAZ - 1 1 1 SCHAZ 1 1 1 - BM 1 2 2 - Data Format: All CSV data shares a common format, as shown below: *_force-displ.csv Column Description Units displacement_mm Displacement over extensometer gage length mm force_kN Applied axial force kN *_triax-ep.csv Column Description Units ep FE-simulated equivalent plastic strain at specimen center ' / ' triax FE-simulated stress triaxiality at specimen center - Citation If you use this dataset, please cite both this Zenodo record and the associated publication: Tu, M., Jhunjhunwala, A., Skiadopoulos, A., Morrison, M., Kanvinde, A., 2026. "Continuum-Damage Mechanics Based Fracture Toughness of Microstructures in Structural Steel Weldments — Experimental Dataset" [Data set]. Zenodo. https://doi.org/10.5281/zenodo.20767302 License This dataset is released under the [Creative Commons Attribution 4.0 International (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/) license. You are free to share and adapt the material for any purpose, provided appropriate credit is given.