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The Influence of High Temperature Duration on the Thermal Mechanical Properties and Damage Mechanism of Granite: Experimental and Numerical Study

Explore thermal damage granite high temperature duration. Review source evidence, methods and limitations for M.Tech research.

Explore thermal damage granite high temperature duration through a published research reference related to Thermal & Fluid Sciences. This M.Tech resource summarizes the available source and suggests questions to validate before choosing an implementation.

Thermal damage granite high temperature duration: source and project details

Research overview

This project looks at how granite is damaged when it stays at high temperatures for a long time. The tests used heating periods from 1 hour up to 32 hours at three temperatures: 150 Β°C, 550 Β°C, and 950 Β°C. The paper’s results show that longer heating makes the damage grow quickly. Mass loss, volume increase, porosity, and the drop in P‑wave speed all rise sharply. At the same time, the uniaxial compressive strength and elastic modulus fall off exponentially. The main frequency of acoustic emissions moves from 120–140 kHz to 260–320 kHz, which means the rock cracks mainly by micro‑cracking.

Computer simulations show that the number of thermal cracks goes up with both temperature and time. More than 80 % of the cracks are intergranular shear fractures. Under a microscope, the damage comes from several sources: mineral phase changes, cracks along grain boundaries, and networks of pores that connect together. The material is meant to help M.Tech students model and assess thermal‑mechanical degradation in deep rock engineering. It guides the use of numerical simulation tools to study crack growth and the shift from brittle to ductile failure.

Reference Paper The Influence of High Temperature Duration on the Thermal Mechanical Properties and Damage Mechanism of Granite: Experimental and Numerical Study
Publication year (source record) 2025
Source document classification Research reference (type not independently verified)
Discovered via Semantic Scholar metadata
Authors (source metadata) Congming Li, Peng Zeng, Kui Zhao, Cong Gong, Liangfeng Xiong, Zhen Huang
Publication type (source metadata) journal-article
Journal / conference (source metadata) International Journal for Numerical and Analytical Methods in Geomechanics
Publisher (source metadata) Wiley
DOI (from source metadata) 10.1002/nag.70183
Metadata consistency check DOI registration metadata compared with indexed record; original PDF text not independently verified.
Evidence reviewed by generator Indexed abstract/description only; original full text, author names in PDF and methods require editorial verification.
Domain Mechanical Engineering
Sub-Domain Thermal & Fluid Sciences
Research source View Source
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Project or research direction

This is a source-backed research starting point, not a tested, ready-made student project. Any implementation requires independent feasibility, safety and results verification.

Possible tools or components to evaluate

Discrete Element Method (DEM) software (e.g., PFC2D/PFC3D or FLAC3D), Finite Element Analysis (FEA) tools, Acoustic Emission (AE) analysis scripts, MATLAB/Python for data processing

Methods or operating principles to examine

Modeling of thermal-mechanical coupling in granite; Simulation of intergranular and intragranular cracking under high-temperature exposure; Analysis of exposure duration (1 to 32 hours) on mechanical properties; Evaluation of crack density and orientation transitions from directional to random; Simulation of brittle-to-ductile failure mode evolution.

Outputs to plan and verify

Numerical models demonstrating the exponential decay of uniaxial compressive strength and elastic modulus as a function of thermal exposure duration; Simulated crack distribution plots showing a high proportion of intergranular shear fractures; Quantitative correlation curves between thermal duration, temperature, and crack density.

Further study ideas to evaluate

Integration of heterogeneous mineral grain distributions to simulate realistic granite microstructures; Extension to cyclic thermal loading scenarios to model geothermal reservoir behavior; Coupling with fluid flow models to study permeability changes in thermally damaged rock masses.

Check the complete source before describing any of these as new or absent from the original work.

Suggested verification steps

  1. Read the cited paper and check which methods, parameters and results it actually reports.
  2. Define a measurable project objective and list equipment or software you can access.
  3. Validate the proposed approach independently before claiming results, working code or experimental success.

Implementation ideas above are planning suggestions, not claims that the cited researchers built or tested those exact extensions.

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