Example Achievement Log for a Mechanical Engineer

A year in the life of a Mechanical Engineer's log

• Jan - achievement: Delivered final CAD models for the bearing housing assembly. Reduced wall thickness from 8mm to 5.5mm in three sections, cutting machining time by 34% without violating stress limits verified in ANSYS. Saved approximately 12 hours per unit in production.
• Mar - feedback: Maya from manufacturing flagged a draft angle issue on the core pins I'd specified. Caught it before tooling; I revised the drawings same day. She said "you didn't get defensive, just fixed it" when we reviewed together.
• Mar - task: Took over vibration analysis for the motor coupling after Dan left. Learned Ansys workbench modal analysis on the job, ran 200+ simulations across different material choices and preload ranges over two weeks.
• Apr - achievement: First prototype of the seal assembly failed at 8500 rpm under load testing; elastomer degradation at the contact lip. Redesigned the surface finish spec and material callout. Second prototype held 12000 rpm for 100 hours without leakage.
• Jun - task: Spent three days on the shop floor troubleshooting the CNC setup for the impeller body. Tool chatter kept rejecting parts. Worked with Jake to dial in spindle speed and feed rate; we got to 98% first-pass yield after that.
• Jun - achievement: Identified that tolerance stack-up in the housing assembly was pushing 60% of units out of spec. Reorganised four dimensions to distribute stack across features with cheaper tolerances. Final assembly scrap dropped from 18% to 4%.
• Aug - feedback: James in quality sent an email about the revised drawing package: "Clear callouts and fewer assumptions. Made inspection planning actually possible this time."
• Sep - task: Undertook thermal FEA for the electronics enclosure under worst-case ambient and solar load conditions. Results showed internal temperature would exceed component limits. Had to go back to materials and add finned surfaces.
• Sep - achievement: Completed design of the field-serviceable cartridge mechanism. Standardised fastener sizes, added locating pins to prevent misassembly, and wrote assembly instructions with line drawings. Reduced field installation time from 45 minutes to 12 minutes.
• Nov - task: Pitched in on the casting supplier evaluation. Collected sample parts, ran dimensional checks against drawing specs, reviewed foundry process docs. Three of five suppliers failed deflection testing; narrowed it down to two good options.
• Dec - achievement: Closed out design freeze and released the Bill of Materials for tooling. 247 line items, all part numbers locked, supplier lead times confirmed. Documentation package went to manufacturing without rework requests.

What makes a strong entry

How this becomes your review in November

This year I focused on closing the gap between design intent and manufacturing reality. I reduced the bearing housing wall thickness by cutting 34% of machining time per unit without breaching stress limits, and identified a tolerance stack-up that was scrapping 18% of assemblies; by reorganising the stack across cheaper features, I brought that down to 4%. When designs failed or raised flags from the shop floor or quality, I treated it as data to iterate on, not a setback: the seal assembly prototype that failed at 8500 rpm led to a redesign that held 12000 rpm for 100 hours, and when manufacturing flagged a draft angle issue, I revised the drawings the same day. The feedback I got was that my drawing packages were clear and assumption-free, and that I stayed collaborative when problems surfaced.

Starting your own log

Don't try to reconstruct a year you have already had. Start from today, one line whenever something happens, and let it build. The Perform Review Achievement Log does this for you and can capture wins straight from Slack, and how to start an achievement log covers the wider playbook.

Example Logs for Related Roles

• Civil Engineer achievement log example
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