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Method-specific report workpapers · U.S. inspection teams

Record TFM Reconstruction Settings with Reported Views

A TFM image depends on the source acquisition and the reconstruction context. Preserve that relationship so a reviewer can understand which view supports the report and what changed during later analysis.

NDT Connect Editorial · Published · Editorial policy

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Give the reported reconstruction its own identity

A file containing acquisition data and an image reconstructed from that data are related records, but they are not interchangeable. Assign a clear reference to the particular reconstruction used for the reported result. Identify the source acquisition and the analysis context that produced it. This is especially useful when the same data supports several modes, regions or review sessions. A filename ending in final does not explain which reconstruction the interpreter actually used or why a later picture looks different.

Treat the reconstruction record as a small evidence map rather than a second inspection procedure. It should connect the reported view, relevant settings and interpretation reference without pretending to select the correct technique. The responsible technical process determines which configuration and supporting checks are appropriate. The report preparer preserves that decision accurately. When the underlying source or reconstruction context cannot be established, keep the uncertainty visible instead of choosing the image with the clearest appearance and assuming it is authoritative.

Separate acquisition strategy from reconstruction method

Record the acquisition strategy actually used and retain the original dataset reference. Do not label every TFM result as the product of the same acquisition arrangement. The source record should establish how the data was collected and which reconstruction was applied. If several acquisitions contributed to the analysis, identify their individual relationships. A combined presentation can obscure changes in position, component condition or configuration unless the report keeps the acquisition events distinguishable from the later analysis.

Sonatest’s explanation of TFM propagation modes describes reconstruction assumptions involving wave paths, wave types and velocities. For the reporting task, this supports preserving the actual reconstruction context rather than treating the displayed image as independent of its inputs. It does not authorize a particular mode for the project. Use the applicable approved or reviewed technical basis and record its reference; do not turn a manufacturer’s illustrative example into a universal inspection instruction.

Preserve wave-set labels exactly as used

Record the mode or wave-set label from the actual software and supporting setup. Abbreviations can look similar while describing different paths or conventions. Do not simplify a label for the report if doing so changes its meaning. Where the recipient needs an explanation, provide the reviewed description alongside the original label. This keeps the record usable across organizations without requiring the recipient to guess how a shortened notation maps to the instrument’s reconstruction configuration.

When several modes support one result, identify what each view contributes through the actual analysis record. Avoid presenting the brightest image as the sole evidence without acknowledging the other relevant views. Equally, do not imply that every available mode was used simply because the software supports it. A report should describe the examination that occurred, including the selected reconstruction relationships and any unresolved interpretation questions, rather than reproduce a product brochure’s list of possible imaging capabilities.

Record geometry and material inputs as evidence references

Keep the relevant geometry and material-input references connected to the reconstruction. This may include the reviewed thickness, surface profile or velocity information used by the analysis process. Preserve units and the source of the inputs. Do not replace an actual entered value with a familiar nominal value during report preparation. If a corrected input was used later, retain the relationship between the earlier and revised reconstruction so the effect on the reported result can be assessed through the responsible review.

Evident’s discussion of common TFM pitfalls illustrates that mode selection, geometry inputs and grid-related choices can affect the reconstructed presentation. The examples are specific demonstrations, not transferable numerical acceptance limits. The reporting lesson is to preserve the real inputs and their reviewed basis. Do not claim that a value is validated merely because it appears in an instrument export, and do not apply a published example percentage as an allowable project tolerance.

Keep the reconstruction zone separate from examination coverage

Define the reconstructed region and its coordinate system. A view can be intentionally limited to a region of interest while the examination includes other areas, or it can display a region whose technical support requires separate assessment. Do not infer complete coverage from the rectangular boundary of an image. The reconstruction zone is a description of the presentation or processing extent; the supported examination scope comes from the actual plan, acquisition and technical review.

Record origins, directions and offsets that connect the view to the component. If the reconstruction zone changed during analysis, identify which version supports the reported coordinates. A useful comparison preserves a common physical reference even when the display window changes. Without that reference, a reviewer may mistake a shifted view for a moved indication or assume two images show the same physical region because their axes have similar numerical ranges. Keep the actual relationship explicit.

Identify the grid and presentation context that matters

Preserve the reconstruction settings required to understand or reproduce the reported view through the project’s actual process. Distinguish processing inputs from display choices such as a selected color scale or zoom. The relevant record may already exist as a saved setup or analysis session; a stable reference can be more reliable than manually copying a long list of settings. The report should explain where the controlling context is retained and which version was used.

Do not equate a sharper-looking picture with a better-supported measurement. A changed grid, envelope selection or display treatment can alter the presentation and may require technical review of its effect. This guide supplies no grid-density, amplitude-fidelity or resolution threshold. Record the applicable verification reference and the responsible decision where those matters affect the result. The purpose is to make the reported reconstruction intelligible, not to suggest that the worksheet itself validates the imaging configuration.

Capture software context without claiming automatic reproducibility

Record the software product and version used for the reported analysis where required by the project. Also identify the saved session or processing record if one exists. A version number alone may not preserve all settings or dependencies needed to reproduce the image. Keep the actual retained files and instructions in the agreed technical package. Do not promise that any recipient can recreate the view merely by opening a screenshot or reading the report’s equipment list.

If data moves between software systems, preserve the conversion relationship and any documented limitations. The report preparer should not assume that an exported image, a converted dataset and the native acquisition contain equivalent information. Record what was actually transferred and reviewed. A later analyst may be able to inspect the original data but unable to reproduce a particular saved view without its context. State that boundary honestly instead of describing the handover as fully reproducible when the evidence does not support it.

Worked example: a revised geometry input changes a view

In a fictional examination, dataset D7 supports reconstruction R1. During review, the team identifies that the geometry reference used for R1 does not match the confirmed component record. A new reconstruction R2 is produced from the same acquisition using the reviewed correction. The report preparer initially replaces the R1 image without explanation. That would leave earlier reviewers unable to understand why the displayed indication location changed even though the source data filename remained the same.

The corrected handover retains D7 as the acquisition reference and distinguishes R1 from R2. It identifies the changed input, the supporting geometry record and the responsible assessment of the effect on the result. The scenario is hypothetical and does not establish a permissible geometry error or an automatic correction rule. Its practical lesson is that a revised reconstruction needs a traceable analysis relationship; it should not be presented as a new field examination or silently substituted for the earlier evidence.

Fictional acquisition and reconstruction decision map
RecordWhat changedEvidence relationshipClaim to avoid
D7 acquisitionNo new field acquisition in this exampleOriginal event and component referenceReconstruction created new physical coverage
R1 viewEarlier geometry inputEarlier review record and retained sourceOld image never existed
R2 viewReviewed geometry correctionSame D7 plus corrected input basisA clearer image automatically validates the result
Revised reportReported view and affected conclusion reviewedR2 and actual technical dispositionFilename alone explains the change

Retain rejected or exploratory views with clear status

An analyst may explore several reconstructions before selecting the evidence supporting the report. Preserve the relevant analysis history according to the project’s record process, while clearly identifying the controlling view. Do not send a folder of unlabeled experiments and expect the recipient to know which one supports the conclusion. Conversely, do not remove a material earlier interpretation from the record merely because a later view appears more convincing. The responsible review determines what needs to remain traceable.

Use descriptive statuses such as exploratory, superseded for reporting or selected for the stated result when those accurately reflect the actual process. Avoid technical acceptance labels unless the supporting decision exists. A view may be useful for discussion without being the basis for a measurement or disposition. Explaining that difference reduces the risk that an unreviewed image circulates as a final result after it is separated from the analyst’s original email or working folder.

Prepare the external data package for the intended recipient

Agree which native datasets, saved analyses and selected images belong in the handover. Record the actual filenames or stable package references, and check for duplicate names in different folders. A report reference should resolve to one identifiable record. If access requires specialist software or a separate transfer arrangement, state that accurately. Do not label the PDF a complete digital dataset when it contains only a table and selected narrative references to files stored elsewhere.

The FMC and TFM retention guide addresses broader data-retention planning. This worksheet focuses on the specific reconstruction supporting a reported result. Use both where appropriate, but keep storage capacity and interpretation provenance as different questions. Retaining a large dataset does not by itself explain the settings used for the issued view, while a precise reconstruction table does not replace the original data when the project requires its preservation.

Use the free tools within their actual boundaries

The digital reporting workspace can hold the reconstruction register, reviewed measurements and explanatory notes. It imports supported DOCX and XLSX tables; it does not read native FMC data, perform TFM reconstruction or attach examination images through the company and client logo controls. Keep those source materials in the actual external package. A report generated in the workspace organizes the supplied evidence references but does not independently verify their technical accuracy.

The equipment tracker can support instrument and probe identification, while the procedure draft tool can help organize proposed reporting responsibilities for technical review. Neither establishes that a reconstruction mode is suitable for the component. Avoid copying generic equipment descriptions into the report as proof of the actual analysis configuration. Use event-specific records and the responsible decision so the report remains accurate about what was done and what the supporting tools actually provide.

Test the record by tracing one result in both directions

Start with a reported indication and locate its reconstruction reference, source acquisition and applicable settings record. Then start with a selected delivered view and identify the result or explanation it supports. This two-way check reveals orphan images, ambiguous session names and measurements that no longer match the final view. It is a practical document review, not a substitute for technical interpretation. Escalate discrepancies to the responsible analyst instead of adjusting the report to make conflicting records appear consistent.

Review the physical coordinate relationship as well as the filenames. An image can be correctly named but associated with the wrong segment or orientation in the report. Check the component identifier, event, datum and selected region together. The buyer-review guide provides broader package checks. For TFM provenance, the central question is whether another qualified reviewer can understand which acquisition and reconstruction context support the result without relying on the original analyst’s memory.

Treat a software upgrade as a context change to review

If a retained dataset is reopened after a software upgrade, record the version used for the new view and check the actual project expectations for comparison. Do not assume that a successful file opening proves an identical reconstruction or that a different appearance proves a new physical condition. Preserve the earlier selected view and settings reference while the responsible analyst determines the significance of any difference. This is particularly useful during long-term handover, when the receiving organization may use a different software environment from the one used to prepare the original report.

Keep later reconstruction changes visible in the history

When a later reconstruction changes a reported result, preserve the reason, evidence and effect through the applicable amendment process. Identify whether the change concerns an input correction, a different analysis approach or only presentation. Do not imply that all such changes have the same technical significance. A revised view can leave the conclusion unchanged or require substantive reassessment; the responsible technical decision establishes which applies and the report should reflect that decision accurately.

Use the worksheet to connect acquisition, reconstruction, reported result and review reference. Replace the fictional row with actual records and keep the completed table with the delivery package. Its value is a clear chain of evidence that survives software sessions, staff handovers and report revisions. The image remains an interpreted reconstruction with a defined context, and the recipient receives enough information to understand that context without being promised unsupported coverage, automatic reproducibility or technical approval by the reporting software.

TFM reconstruction and reported-view provenance

Download this editable CSV for the task described above. Replace illustrative prompts with your own supported facts. The worksheet is a planning aid; it does not establish inspection acceptance or approval.

Download the free workflow worksheet

Questions about this workflow

Is a new TFM reconstruction a new examination?

Not necessarily. Distinguish reprocessing of existing acquisition from new field acquisition and record the actual event relationship.

Can I shorten the wave-set name in the report?

Preserve the actual software or setup label. Add a reviewed explanation if needed rather than changing a notation whose meaning may depend on its convention.

Does a larger reconstruction zone prove more coverage?

No. The displayed or reconstructed region and the technically supported examination scope are separate questions.

Does NDT Connect reconstruct FMC or TFM data?

No. The free reporting tool organizes reviewed text and supported Office tables. Native acquisition and reconstruction remain in the appropriate technical software.

Sources and editorial scope

Primary references support the specific context cited in the guide. Worked examples and suggested workflows are NDT Connect editorial guidance. Confirm the documents and authority applicable to the actual assignment.

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Free tools for this workflow

Free digital NDT reporting

Import DOCX/XLSX tables, enter specifications and results, add logos and download a PDF. A free verified account saves numbered reports and revisions.

Equipment tracker

Maintain an account equipment register and supporting records. An entry does not establish equipment fitness for a particular examination.