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Composite laminate has extensive usage in the aerospace and automotive industries. Thus delamination, one of its most prevalent and challenging failure modes, has attracted substantial research efforts, and lead to the rapid development of both simulation and experiment method. Although reviews exist about simulation and experiment methods, there are not many that cover the development in the last five years. This paper is targeted to fill that gap. We covered a broad range of topic in delamination, from the basic delamination onset and propagation theories to complex loading scenarios, like impact and fatigue loading. From a simulation point of view, virtual crack closure technique (VCCT) and cohesive zone model (CZM), the two most famous methods of delamination modeling, are compared and elaborated. Their implementation techniques are described, and their merits and drawbacks are discussed. We also covered the failure mode of combined delamination and matrix cracking, which is prevalent in impact loading scenarios. Simulation techniques, along with the failure mechanisms, are presented. From experiment point of view, the discussed topics range from delamination fracture toughness (DFT) tests under static, dynamic, or cyclic loading conditions, to impact tests that aim to obtain the impact resistance and residual strength after impact. Moreover, a collection of recent experiment data is provided.

Tabiei, A., and Zhang, W. (June 19, 2018). "Composite Laminate Delamination Simulation and Experiment: A Review of Recent Development." ASME. Appl. Mech. Rev. May 2018; 70(3): 030801. https://doi.org/10.1115/1.4040448

9. Properly handle and store inserts: Handle inserts with care to avoid damage. Store them in a clean and dry environment to prevent contamination and oxidation.

Manuscript received August 2, 2017; final manuscript received May 29, 2018; published online June 19, 2018. Assoc. Editor: Samantha H. Daly.

3. Use proper cutting fluids: Cutting fluids help to cool the insert and lubricate the cutting process, reducing friction and heat generation. This can significantly extend insert life.

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Maintaining control over the wear of milling inserts is very important as it directly affects the milling effect and production efficiency. When the inserts are worn too much, their cutting ability will decrease, resulting in a decrease in the quality of the machined surface and even damage to the workpiece. Therefore, regular inspection and replacement of inserts to ensure their wear is within a reasonable range can improve production efficiency and product quality.

1. Choose the right insert material: Different materials have different wear resistance properties. Select an insert material that is designed to withstand the specific cutting conditions and materials being machined.

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4. Ensure proper tool and insert setup: Proper tool and insert setup, including correct alignment and clamping, is crucial to prevent premature wear. Follow the manufacturer's recommendations for insert positioning and tightening torque.

6. Perform regular maintenance: Inspect inserts regularly for signs of wear or damage. Replace worn inserts promptly to avoid further damage to the workpiece and tool.

8. Avoid excessive cutting forces: Excessive cutting forces can accelerate insert wear. Optimize cutting parameters and tool geometry to minimize cutting forces.

5. Implement effective chip control: Proper chip evacuation is essential to prevent chips from scratching the insert and causing wear. Use chip breakers, chip deflectors, or chip evacuation systems to control chip size and direction.

10. Seek expert advice: If insert wear issues persist or if you need assistance with selecting the right inserts and cutting parameters, consult with tooling experts or manufacturers for guidance. They can provide valuable insights and recommendations.

2. Optimize cutting parameters: Adjusting the cutting speed, feed rate, and depth of cut can help reduce insert wear. It is important to find the balance between productivity and insert life.

In addition, controlling the wear of milling cutters can also reduce processing costs. inserts that are worn too much need to be replaced more frequently, which not only increases material and labor costs but also increases downtime on the production line. Regular maintenance and replacement of inserts can extend their service life, reduce downtime and costs. Therefore, controlling the wear of milling cutters should be an important part of the production process.

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7. Consider coatings or surface treatments: Coatings or surface treatments can improve the wear resistance of inserts. Explore options such as TiN (titanium nitride), TiCN (titanium carbonitride), or PVD (physical vapor deposition) coatings.

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