Technical writing for the engineers who will actually have to act on it. No gated downloads, no lead capture, no thought leadership.
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Lap shear is the most-run and least-informative adhesion test in industry. It loads the bond in a mode that field failures rarely use, it is dominated by substrate stiffness, and it is almost insensitive to the interfacial chemistry that actually degrades. A case for peel, wedge and humidity-cycled testing instead — and what each one is really telling you.
A coin cell floods the electrode in electrolyte, applies no meaningful stack pressure and has effectively infinite thermal mass relative to its heat generation. All three of those are wrong at pack scale, and all three drive cycle life. What to measure at bench scale so the extrapolation survives.
Most failure investigations generate data consistent with every hypothesis on the list, then pick the favourite. A short, practical framework: enumerate mechanisms first, identify the measurement that best discriminates between the top two, and commit to what each outcome will mean before running it.
Finding a species on a wafer surface tells you very little on its own. The useful question is the transport path — and answering it usually requires deliberately contaminating something. Notes on using ToF-SIMS depth profiles and process bracketing to trace an origin rather than describe a symptom.
IEC 61215 is a screening test, not a life prediction, and the industry keeps quietly treating it as one. What an acceleration factor actually requires, why the activation energy you borrowed from a paper probably does not apply to your encapsulant, and how to build a defensible lifetime argument.
You cannot hold tip speed, power per unit volume and mixing time constant at the same time — the geometry will not allow it. Deciding which one your process is actually sensitive to is the whole job, and it is answerable at bench scale before you commit to a pilot.
A great many composite specifications carry a 2% void content limit with no traceable origin. Where the number came from, what the actual relationship between void content and interlaminar shear strength looks like for your layup, and how to set a limit you can defend.
When an unknown peak resists identification against every raw material and intermediate, the answer is frequently something that did not exist until the analysis started. Notes on distinguishing genuine process impurities from artefacts generated in the injector port.
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That is usually not a coincidence. These pieces come from investigations we have run repeatedly across different clients and sectors.