Changelog¶

Changes in every release, as in the app's What's new.

0.3.0¶

2026-10-10 Latest

Project workbench

A step-by-step workflow: Geometry → Convert → Process & DOFs → System identification → Modal analysis → Results. Every step creates an item (raw, converted, processed, model, mode set) kept with its lineage.
Project explorer on the right: select, multi-select, drag & drop, rename, delete, lineage, logfile.
logfile.py per project and a batch API (chladni.workbench.batch) to replay an analysis.

Identification and modal analysis

PSD+ (periodogram, correlogram), H1 FRF, SSI-data / SSI-cov (reference-based, uncertainty), pLSCF (operational and deterministic), CSI with measured forces (EMA / OMAX).
Stabilization diagram with frequency, damping, MAC, MPC and MPD criteria, pole picking per model order, complex-plane mode shapes.
Peak picking (ANPSD) and CMIF/FDD; combining setups; MP, MPD; MAC between any two mode sets.
Export of mode sets in the stabmodes.mat format (MACEC-compatible).

Data import

CSV / TXT / DAT / ASC, Excel, MATLAB v5–v7.3 (channel names read from the file), WAV, LabVIEW TDMS, UFF 58.
One conversion table for several setups keeps every setup's channel names; DOF tables from CSV.

Application

Local user profiles with sign-in / sign-out, account menu, help menu, keyboard shortcuts, command palette (Ctrl+K), About dialog and this changelog.
User manual (PDF) and the Z24 bridge tutorial.
Readable drop-down lists and native controls in every theme; no more truncated labels in tables.

2026-10-09

New desktop interface (React + FastAPI) replacing the Streamlit pages; runs offline in its own window.
Projects with site information, drawings and history; import / export as ZIP.
Catppuccin theme (four flavours, fourteen accents) and full English / Vietnamese interface.
The application is renamed Chladni, after Ernst Chladni.
4-storey shear frame benchmark project (data of MACEC 3.4 tutorial 1); .asc geometry files and .mat data can be imported.

2026-10-08

Livraria Lello digital twin: reinforced-concrete + timber OpenSeesPy model, calibration on the NCREP 2020 frequencies, virtual sensors, monitoring, damage scenarios.
Project-based OMA workflow with pyOMA2 (single setup, PoSER, PreGER) and mode-shape animation.