Defects and anomalies in powder bed fusion metal additive manufacturing
Metal additive manufacturing is a disruptive technology that is revolutionizing the
manufacturing industry. Despite its unrivaled capability for directly fabricating metal parts …
manufacturing industry. Despite its unrivaled capability for directly fabricating metal parts …
In-situ monitoring of sub-surface and internal defects in additive manufacturing: A review
Abstract Additive Manufacturing (AM), or 3D printing, processes depend on a user-defined
set of optimized process parameters to create a component. Monitoring and control of AM …
set of optimized process parameters to create a component. Monitoring and control of AM …
Critical instability at moving keyhole tip generates porosity in laser melting
Laser powder bed fusion is a dominant metal 3D printing technology. However, porosity
defects remain a challenge for fatigue-sensitive applications. Some porosity is associated …
defects remain a challenge for fatigue-sensitive applications. Some porosity is associated …
Keyhole fluctuation and pore formation mechanisms during laser powder bed fusion additive manufacturing
Keyhole porosity is a key concern in laser powder-bed fusion (LPBF), potentially impacting
component fatigue life. However, some keyhole porosity formation mechanisms, eg, keyhole …
component fatigue life. However, some keyhole porosity formation mechanisms, eg, keyhole …
Keyhole threshold and morphology in laser melting revealed by ultrahigh-speed x-ray imaging
We used ultrahigh-speed synchrotron x-ray imaging to quantify the phenomenon of vapor
depressions (also known as keyholes) during laser melting of metals as practiced in additive …
depressions (also known as keyholes) during laser melting of metals as practiced in additive …
Dynamics of pore formation during laser powder bed fusion additive manufacturing
Laser powder bed fusion additive manufacturing is an emerging 3D printing technique for
the fabrication of advanced metal components. Widespread adoption of it and similar …
the fabrication of advanced metal components. Widespread adoption of it and similar …
In-situ measurement and monitoring methods for metal powder bed fusion: an updated review
The possibility of using a variety of sensor signals acquired during metal powder bed fusion
processes, to support part and process qualification and for the early detection of anomalies …
processes, to support part and process qualification and for the early detection of anomalies …
Laser melting modes in metal powder bed fusion additive manufacturing
In the laser powder bed fusion additive manufacturing of metals, extreme thermal conditions
create many highly dynamic physical phenomena, such as vaporization and recoil …
create many highly dynamic physical phenomena, such as vaporization and recoil …
Pore elimination mechanisms during 3D printing of metals
Laser powder bed fusion (LPBF) is a 3D printing technology that can print metal parts with
complex geometries without the design constraints of traditional manufacturing routes …
complex geometries without the design constraints of traditional manufacturing routes …
Invited Review Article: Review of the formation and impact of flaws in powder bed fusion additive manufacturing
It is widely accepted that gas porosity and lack-of-fusion flaws can degrade both static and
dynamic mechanical performance of additively manufactured components, limiting the use …
dynamic mechanical performance of additively manufactured components, limiting the use …